#include <iostream>
#include <stdio.h>
#include <ctype.h>
using namespace std;
int main()
{
   string str,str1;
   cin>>str;
   int count=0;
   str1=str[0];
   for(int i=1;i<str.length();i++)
   {
      count=0;
      for(int j=0;j<str1.length();j++)
      {
        if(str[i]==str1[j])
        {
            count++;
            break;
        }
      }
      if(count==0)
      {
          str1+=str[i];
      }
   }
   if(str1.length()%2==0)
      cout<<"CHAT WITH HER!"<<endl;
   else
      cout<<"IGNORE HIM!"<<endl;
}

#include <bits/stdc++.h>
using namespace std;

int main() {
    int arr[26];
    memset(arr,0,sizeof(arr));
    string a;
    cin >> a;
    int count = 0;
    for (int i = 0; i < a.length(); i++){
        if(arr[a[i]-97] ==0)
            ++count;
        arr[a[i]-97] = 1;
    }
    if (count % 2 == 1)
        cout << "IGNORE HIM!";
    else
        cout << "CHAT WITH HER!";
}

#include<stdio.h>
#include<string.h>
int main()
{
	char a[10001];
	int len, i,j,sum;
	scanf("%s", &a);
	len = strlen(a);
	sum = len;
	for (i = 0; i < len; ++i)
	{
		for (j = i+1, j; j < len; ++j)
		{
			if (a[j] == a[i])
			{
				--sum;
				break;
			}
		}
	}
	if ((sum % 2)!=0)
		printf("IGNORE HIM!\n");
	else
		printf("CHAT WITH HER!\n");
}

#include <stdio.h>
#include <string.h>

void swap_(char& a, char& b) {
	char temp = a;
	a = b;
	b = temp;
}

int main() {
	char uname[101];
	scanf("%s", uname);

	int l = strlen(uname);
	// sort alphabetically
	for (int i = 0; i < l; ++i) {
		int minpos = i;
		for (int j = i + 1; j < l; ++j)
			if ((int)uname[j] < (int)uname[minpos]) minpos = j;
		swap_(uname[i], uname[minpos]);
	}

	//printf("length=%d. sorted=%s\n", l, uname);

	int n = 1;
	for (int i = 1; i < l; ++i) {
		if (uname[i] != uname[i - 1]) ++n;
	}

	printf("%s\n", (n%2==0) ? "CHAT WITH HER!" : "IGNORE HIM!");

	return 0;
}

#include <stdio.h>
#include<string.h>
#include<stdlib.h>
#include<math.h>
#include <algorithm>
using namespace std;
int main()
{
	int x, y, i, j,count=0;
	char a[101];
	scanf("%s", a);
	y = strlen(a);
	x = strlen(a);
	for (i = 0; i < x; i++)
		for (j = i + 1; j < x; j++)
		if (a[i] == a[j])
		{
			a[j] = '0';
		}
	for (i = 0; i < x; i++)
		if (a[i] != '0')
			count++;
	if (count % 2 == 0)
		printf("CHAT WITH HER!\n");
	else
		printf("IGNORE HIM!\n");
}

#include<bits/stdc++.h>
using namespace std;
int main(){
vector<char>V;
string s;
int i, j, coun, m, n, p;
cin >> s;
m= s.size();
for(i=0; i<m; i++){
    coun=0;
    n=V.size();
    for(j=0; j<n; j++){
        if(V[j]==s[i]){
            coun++;
        }
    }
    if(coun==0)
        V.push_back(s[i]);
    }
    /*for(i = 0 ; i < n; i++){
        cout<<V[i];
    }*/
    p=V.size();
    if(p%2==0)
        cout << "CHAT WITH HER!" << endl;
    else
        cout << "IGNORE HIM!" << endl;
return 0;
}

#include <iostream>
using namespace std;
int main()
{
    string a;
    cin>>a;
    int n=1,k;
    for(int i = 0 ; i <a.size() ; i++ )
    {
        k=0;
       for(int j = 0 ; j < i ; j++)
       {
           if(a[i]==a[j] && i!=j)
           {
               k++;
           }
       }
       if(k==0 && i!=0)
       {
          n++;
       }
    }
    if(n%2==0)
    {
        cout<<"CHAT WITH HER!\n";
    } else
    {
        cout<<"IGNORE HIM!\n";
    }
}

 #include <stdio.h>
#include <string.h>
int main(void){
	char name[200];
	int i,k;
	int ok=1;
	int cnt=0;
	gets(name);
	for (i=0; i<strlen(name); i++){
		ok=1;
		for (k=i+1; k<strlen(name); k++){
			if (name[i]==name[k]){
				ok=0;
				break;
			}
		}
		if(ok)
			cnt++;
	}
	if (cnt%2!=0)
		printf("IGNORE HIM!\n");
	else
		printf("CHAT WITH HER!\n");
	return 0;
}

#include<iostream>
using namespace std;
#include<string>
#include<algorithm>
int main()
{
    string s;
    cin>>s;
    int n,c=0;
    sort(s.begin(),s.end());
    for(int i=0;i<s.length();i++)
    {
        if(s[i]==s[i+1])
        {
            c++;
        }
    }
    n=s.length()-c;
    if(n%2==0)
    {
        cout<<"CHAT WITH HER!";
    }
    else{
        cout<<"IGNORE HIM!";
    }
}

#include <iostream>
#include<string>
using namespace std;

int main()
{

int c=0,k=0;
    string name;
    cin>>name;
    int len = name.size();

    for(int i=0;i<len-1;i++){
        for(int j=i+1;j<len;j++){
        if(name[i]==name[j]){
            name[i]=1;
        }

    }

    }

     for(int i=0;i<len;i++){

        if(!isalpha(name[i])){
            c++;
        }

    }
len=len-c;
   //cout<<name<<len;

    if(len%2==0){
        cout<<"CHAT WITH HER!";
    }else{
    cout<<"IGNORE HIM!";
    }

    return 0;
}

#include <iostream>
#include <string>
#include <algorithm>

int CheckDistinctCharacters(std::string username);

int main()
{
	std::string inputString;

	std::cin >> inputString;

	int count = CheckDistinctCharacters(inputString);

	if (count % 2 == 0)
	{
		std::cout << "CHAT WITH HER!";
	}
	else
	{
		std::cout << "IGNORE HIM!";
	}
}

int CheckDistinctCharacters(std::string username)
{
	//char dist[CHAR_MAX];
	//char similar[CHAR_MAX];
	//bool success = false;
	int countDist = 0, countSimi = 0;

	//std::sort(username.begin(), username.end());

	//std::cout << username << "\n" << std::endl;

	//dist[0] = username[0];

	for (int i = 0; i <= username.length() - 1; i++)
	{
		char temp = username[i];
		for (int j = 0; j <= username.length() - 1; j++)
		{
			if (temp == username[j])
			{
				if (i == j)
				{
					break;
				}
				else
				{
					countSimi++;
					break;
				}
			}
			/*else
			{
				countDist++;
			}*/
		}
	}

	/*for (int i = 0; i < username.length(); i++)
	{
		for (int j = username.length() - 1; j <= 0; j--)
		{
			if (username[i] == username[j])
			{
				success = false;
				similar[countSimi++] = username[j];
				break;
			}
		}
		if (!success)
		{
			dist[countDist++] = username[i];
			success = true;
		}
	}*/

	countDist = username.length() - countSimi;

	//std::cout << "Length: "<< username.length() << " + Dist: " << countDist << " + Simi: " << countSimi << std::endl;

	return countDist;
}

#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
    string s;
    cin>>s;
    int loc=0,x=0,c=0,arr[1000],j=0;
    sort(s.begin(),s.end());
    for(int i=0;i<s.length();i++){
          if(s[i]==s[i+1])
            arr[j]++;
          else{
            j++;
            arr[j]++;
          }
    }

   if(j%2==0)
        cout<< "CHAT WITH HER!";
    else
        cout<<"IGNORE HIM!";

    return 0;
}

#include <iostream>
#include <algorithm>
using namespace std;

int main() {
    string s;
    cin >> s;
    int r = 0;
    sort (s.begin(), s.end());
    s += '\n';

    for(int i=0; i<s.length()-1; i++) {
        if(s[i] != s[i+1]) {
            r+=1;
        }
    }
    if(r % 2 == 0) {
        cout << "CHAT WITH HER!" << endl;
    } else {
        cout << "IGNORE HIM!" << endl;
    }

    return 0;
}

#include<iostream>
#include<string>
#include<set>
using namespace std;
int main()
{
	string s;
	cin>>s;
	set <char> n;
	for(int i=0;i<s.size();i++)
	  n.insert(s[i]);

	if (n.size()%2==0)
	 cout<<"CHAT WITH HER!";
	else
	 cout<<"IGNORE HIM!";
}

#include <bits/stdc++.h>

using namespace std;

set< char > sc;

int main(){

	string s;

	cin >> s;

	for( int i=0; i< s.length(); ++i )
		sc.insert( s[i] );

	if( sc.size()%2== 0 )
		printf( "CHAT WITH HER!\n" );
	else
		printf("IGNORE HIM!\n");

}

#include<iostream>
#include<string>
using namespace std;
int main ()
{
	string s;
	cin>>s;
	int x;
	for(int i=0 ; i<s.size() ;i++)
	{
		for( int j=i+1 ; j<s.size() ;j++)
		{
			if(s[i]==s[j])
				s[j]='0';
		}
		if(s[i]!='0')
			x++;
	}
	if(x%2==0)
	{
		cout<<"CHAT WITH HER!";

	}
	else
	{
		cout<<"IGNORE HIM!";

	}
	return 0;
}

#include<stdio.h>
#include<string.h>
#include<algorithm>
#include<iostream>
using namespace std;
int vis[30];
char s[110];
int main()
{
    int i,j,l;
    while(scanf("%s",s)!=EOF)
    {
        memset(vis,0,sizeof(vis));
        int cnt=0;
        l=strlen(s);
        for(i=0;i<l;i++)
        {
            if(!vis[s[i]-'a'])
            {
                vis[s[i]-'a']=1;
                cnt++;
            }
        }
        if(cnt&1)
            printf("IGNORE HIM!\n");
        else
            printf("CHAT WITH HER!\n");
    }
    return 0;
}

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
    int z=1 ;
    string s  ;
    cin >> s ;
        sort(s.begin(), s.end());
          for (int i=1 ;i<s.size(); i++)
    {
        if (s[i]==s[i+1]||s[i]==s[i-1]) {
            s.erase(i,1) ;
            i-- ;
        }
    }

    if (s.size()%2==0)
        cout << "CHAT WITH HER!" << endl ;
    else cout << "IGNORE HIM!" << endl ;

     return 0 ;

}

#include <bits/stdc++.h>
using namespace std;
string s;
string str;
int x;
int main()
{
   /* cin>>s;
    int y =s.length();

    for(int i=0;i<s.length();i++)
    {
        for(int j=0;j<s.length();j++)
        {
           if(s[i]==str[j])
           {
               continue;
           }
           /* if(s[i]!=str[j])
                {
                    str[i]=s[i];
                    x++;
                }*

              else
                    {
                        str[i]=s[i];
                    }
        }

    }

    /*x=s.length();

        for(int i=0;i<=x-1; i++)
        {
            for(int j=i+1; j<=x; j++)
            {
                if(s[i]==s[j])
                    x-=1;
            }
        }
/
cout<<str<<endl;
x=str.length();
cout<<x;
        if(x%2==0)
            cout<<"CHAT WITH HER!";
        else
            cout<<"IGNORE HIM!";
           */

    char str[100]={'0'};

    int i,j,len,tmp=0,check=0;
    int ck[26]={0};

        while( scanf("%s",&str)==1)
        {
        tmp=0;
        len=strlen(str);
        check=0;

            for(i=0;i<len;i++){
                tmp=str[i]-97;
                ck[tmp]++;
            }
                for(j=0;j<26;j++){
                        if(ck[j]>=1){
                            check++;
                            //break;
                        }
                  //  printf("%d ",ck[j]);
                }

                if(check%2==0){
                    printf("CHAT WITH HER!\n");
                }
                else{
                    printf("IGNORE HIM!\n");
                }
                    memset(str,'0',sizeof str);
                    memset(ck,0,sizeof ck);
   return 0;
        }

    return 0;
}

#include <iostream>
#include <string>
#include <cstring>
using namespace std;

int main()
{
	string s;
	cin>>s;
	bool f[10000];
	int n,i,j,l,x;
	l=s.length();
	x=0;
	memset(f,true,sizeof(f));
	for (i=0; i<l; i++)
		if (f[s[i]-'a']==true)
		{
			x++;
			f[s[i]-'a']=false;
		}
	if (x%2==1) cout<<"IGNORE HIM!"<<endl; else cout<<"CHAT WITH HER!"<<endl;
	return 0;
}

#include<bits/stdc++.h>
#define str string
using namespace std;
	int a[26];
int main () {
	int h=0;
	str s;
	cin>>s;
	for(int i=0;i<s.length();i++){
		if(a[(int)s[i]-97])

continue;
a[(int)s[i]-97]++;
h++;

	}
	if(h%2!=0){
		cout<<"IGNORE HIM!";
	}
	else
	cout<<"CHAT WITH HER!";
	return 0;
}

#include<cstdio>
int unique(char *str);
int main(){
    char str[100];
    scanf("%s",str);
    int count=unique(str);
    if(count%2==0){
        printf("CHAT WITH HER!");
    }
    else {
        printf("IGNORE HIM!");
    }
    return 0;
}
int unique(char *str){
    int count=0;
    for(int i=0;str[i]!='\0';i++){
        bool uni=false;
        for(int j=0;j<i;j++){
            if(str[j]==str[i]){
                uni=true;
                break;
            }
        }
        if(!uni){
            count++;
        }
    }
    return count;
}

#include<bits/stdc++.h>
using namespace std;
int main(){
    string a;
    int b;
    cin>>a;
    b=a.length();
    int count=0;
    for(int i=0;i<b;i++){
        for(int j=i+1;j<b;j++){
            if(a[i]==a[j]){
                a[j]='\0';
            }
        }

    }
    for(int i=0;i<b;i++){
        if(a[i]>='a'&&a[i]<='z'){
            count++;
        }
    }
    if(count%2==0){
        cout<<"CHAT WITH HER!";
    }
    else{
        cout<<"IGNORE HIM!";
    }
    return 0;
}

#include<iostream>
#include<string>
using namespace std;

int main(){
	string a;
	cin >> a;
	int n =0;
	string b;

	for(int i =0; i< a.length(); i++){

			for(int j = 1+i ; j < a.length()  ; j++){
				if(a[i]==a[j]){
					//cout << "jhel";
					n++;
					break;
				}
			}

	}
//	cout << a.length() -n << " " << n;
	if((a.length()-n)%2==0){
		cout << "CHAT WITH HER!\n";
	}else{
		cout << "IGNORE HIM!\n";
	}

}

#include<bits/stdc++.h>
using namespace std;
#define mod 1000000007
#define INF 0x3f3f3f3f
#define all(x) (x).begin(),(x).end()
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define endl "\n"
#define pb push_back
#define rep(i,a,n) for (int i=a;i<n;i++)
#define per(i,a,n) for (int i=n-1;i>=a;i--)
#define mp make_pair
#define print(v); for(auto x:v) cout<<x<<" "; cout<<endl;
typedef long long int ll;
int main()
{
    fast;
    string str;
    cin >> str;
    unordered_map<char, int> umap;
    for(int i = 0; i < str.length(); i++){
        umap[str[i]]++;
    }
    if(umap.size() % 2 == 0){
        cout << "CHAT WITH HER!" << endl;
    }
    else{
        cout << "IGNORE HIM!" << endl;
    }

    return 0;
}

#include<iostream>
#include<algorithm>
#include<cstring>
using namespace std;
char s[105];
int main(){
	gets(s);
	sort(s,s+strlen(s));
	if((unique(s,s+strlen(s))-s)%2)cout<<"IGNORE HIM!";
	else cout<<"CHAT WITH HER!";
}

#include <iostream>
#include <cctype>
using namespace std;

int main(){
    string s1{};
    cin >> s1;
    for(int k=0;k<s1.length();k++){
        s1[k]=toupper(s1[k]);
    }

    for(int i=0;i<s1.length();i++){
        for(int j=i+1;j<s1.length();j++){
            if(s1[i]==s1[j]){
                s1.erase(j,1);
            j--;
                }
            }
        }
    if ((s1.length())%2 == 0)
        cout << "CHAT WITH HER!";
        else
            cout << "IGNORE HIM!";
    return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
     string s;int c;
     cin>>s;
     int n=s.length();
     for(int i=0;i<n;i++)
     {
         for(int j=i+1;j<n;j++)
         {
             if(s[i]==s[j])
             {
                 s[j]=0;
             }

        }
   }
   for(int i=0;i<n;i++)
   {
      if(s[i]!=0)
      {
           c++;
      }
   }

     if(c%2==0)
     cout<<"CHAT WITH HER!";
     else
     cout<<"IGNORE HIM!";
}

#include<iostream>
#include<cstring>
#include<cstdio>
using namespace std;
int main()
{
	char a[100010];
	int b[26]={};
	cin.getline(a,100010);
	for(int i=0;i<strlen(a);i++)
	{
		b[a[i]-'a']++;
	}
	int t=0;
	for(int i=0;i<26;i++)
	{
		if(b[i]!=0)t++;
	}
	if(t%2==0)cout<<"CHAT WITH HER!";
	else cout<<"IGNORE HIM!";
	return 0;
}

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <string.h>
using namespace std;

int main() {
	string name;
	int numChars = 1;
	char distinctChar[100];
	cin >> name;

	distinctChar[0] = name[0];

	for (int i = 0; name[i] != '\0'; ++i) {
		for (int j = 0; j < numChars; ++j) {
			if (distinctChar[j] == name[i]) {
				break;
			}
			if (j == numChars - 1) {
				distinctChar[numChars] = name[i];
				numChars++;
			}
		}
	}

	if (numChars % 2 == 0) {
		cout << "CHAT WITH HER!";
	}
	else {
		cout << "IGNORE HIM!";
	}

	return 0;
}

#include<cstdio>
#include<iostream>
#include<cstring>
#include<string>
#include<cmath>
#include<algorithm>
using namespace std;
int ans;
bool a[123];
char k;
int main()
{
    while((k=getchar())!='\n')
    {
    	if(!a[k])
    		a[k]=true,ans++;
	}
	if(ans%2==0)
		cout<<"CHAT WITH HER!";
	else
		cout<<"IGNORE HIM!";
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int a[27],ans;
int main(){
	char s;
	while(cin >> s){
		a[s-96]++;
	}
	for(int i=1;i<=26;i++){
		if(a[i]!=0) ans++;
	}
	if (ans % 2 == 0) cout << "CHAT WITH HER!";
	else cout << "IGNORE HIM!";
	return 0;
}

#include <stdio.h>
#include <set>
using namespace std;

int main()
{
    char A[111];
    scanf("%s", A);
    puts(set<char>(A, A + strlen(A)).size() % 2 == 0 ? "CHAT WITH HER!" : "IGNORE HIM!");
}

#include<iostream>
#include<string>
using namespace std;
int main() {
	string a;
	int r, m, b[26] = {0}, n;
	cin >> a;
	m = 0;
	for(int i = 0; i < a.size(); i++){
		n = a[i] - 'a';
		b[n]++;
	}
	for(int i = 0; i < 26; i ++){
		if(b[i] > 0){
			m++;
		}
	}
	if(m % 2 == 0){
		cout << "CHAT WITH HER!";
	}
	if(m % 2 == 1){
		cout << "IGNORE HIM!";
	}
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int l,count=0,i;

    string s;

    cin>>s;

    l=s.length();

    sort(s.begin(),s.end());

    for (i = 1; i<l; i++)
    {
        if (s[i] != s[i -1] )

        {
            count++;
        }

    }
    if((count+1)%2==0)

    {
        printf("CHAT WITH HER!\n");
    }

    else

    {
        printf("IGNORE HIM!\n");
    }

    return 0;

}

#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
int main() {
	string str;
	fflush(stdin);
	cin >> str;
	int dem = 0;
	sort(str.begin(), str.end());
	char temp = str.at(0);
	for (int i = 1; i < str.size(); i++) {
		if (str.at(i) != temp) {
			temp = str.at(i);
			dem++;
		}
	}
	if (dem % 2 == 0)
		cout << "IGNORE HIM!";
	else

	cout << "CHAT WITH HER!";
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int letter[26];

int main (){
	int i, sum = 0;
	string name;
	cin >> name;
	for ( i = 0; name[ i ]; i++)
			letter[ name[ i ] -97] = 1;

	for ( i = 0; i < 26; i++)
		sum += letter[ i ];
	sum & 1 ? cout << "IGNORE HIM!" : cout << "CHAT WITH HER!";

	return 0;
}

#include<bits/stdc++.h>
using namespace std;
char a[200];
int main()
{
	cin>>a;
	int sum=0;
	for(char i='a';i<='z';i++)
	{
		for(int j=0;j<strlen(a);j++)
		{
			if(a[j]==i)
			{
				sum++;
				break;
			}
		}
	}
	if(sum%2==0)
	cout<<"CHAT WITH HER!"<<endl;
	else
	cout<<"IGNORE HIM!"<<endl;
	return 0;
}

#include <iostream>
#include <string>
using namespace std;
 int c;
 string str;
bool ch[26]={false};

int main()
{
    int base=(int)'a';
    cin>>str;
    for(int i=0;i<str.length();i++){
        ch[(int)str[i]-base]=true;
    }
    for(int i=0;i<26;i++)
    {
        if(ch[i])
            c++;
    }
    if(c%2==0)
        cout<<"CHAT WITH HER!";
    else cout<<"IGNORE HIM!";
}

#include<iostream>
#include<string>

using namespace std;
bool exist(char [] , char , string s);
bool check(string s);

int main()
{
    string s;
    cin>>s;

    if(check(s))
        cout<<"CHAT WITH HER!"<<endl;
    else
        cout<<"IGNORE HIM!"<<endl;

    return 0;
}

bool exist( char Array [] , char el , string s)
{
    for(int i=0 ; i<s.size() ; i++)
        if(el==Array[i])
            return true;
    return false;
}

bool check(string s)
{
    int count=1;
    char Array[s.size()];
    Array[0]=s.front();
    for(int i=1 ; i<s.size() ; i++)
    {
        if((exist(Array,s.at(i),s)))
            continue;
        else
        {
            count++;
            Array[i]=s.at(i);
        }
    }

    if(count%2==0)
        return true;
    else
        return false;
}

#include<bits/stdc++.h>
using namespace std;
string n;
int a[1005],s;
int main(){
	cin>>n;
	for(int i=0;i<n.size();i++){
		if(!a[n[i]]){
			a[n[i]]=1;
		}
	}
	for(int i=1;i<=1000;i++){
		if(a[i]==1){
			s++;
		}
	}
	s=s%2;
	if(s){
		cout<<"IGNORE HIM!";
		return 0;
	}
	cout<<"CHAT WITH HER!";
    return 0;
}

#include <iostream>
#include <string>
#include <algorithm>

using namespace std;

int main()
{
    string s;
    cin >> s;
    sort(s.begin(), s.end());
    s.erase(unique(s.begin(), s.end()), s.end());
    if (s.length() % 2 == 0)
    {
        cout << "CHAT WITH HER!" << endl;
    }
    else
    {
        cout << "IGNORE HIM!" << endl;
    }
    return 0;
}
// 1535887303087

#include<iostream>
#include<string>

using namespace std;

int main(){
	string x;
	cin>>x;
	int y;
	y=x.size();
	int f=y;
	int c=0;

	for(int i=0 ; i<y ; i++)
	{
		c++;
		for(int j=i-1 ; j>=0 ; j--)
		{
			if(x[i]==x[j])
			{
				c--;
				break;
			}
		}
	}

	//cout<<"C: "<<c<<endl;

	if(c%2!=0)
	cout<<"IGNORE HIM!"<<endl;

	else
	cout<<"CHAT WITH HER!"<<endl;

	return 0;
}

#include<iostream>
using namespace std;
char a;
int b[101],x;
int main()
{
	int c=0,ans=0,d=0;
	while(cin>>a)
	{
		x=a;
		c++;
		for(int i=0;i<=c;i++)
		{
			if(b[i]==x)
			{
				d++;
			}
		}
		if(d!=0)
		{
		    ans--;
    	}
    	ans++;
    	b[c]=x;
    	d=0;
	}
	if(ans%2==0)cout<<"CHAT WITH HER!";
	else cout<<"IGNORE HIM!";
	return 0;
}

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
    char a[100];
    cin>>a;
    int r=strlen(a),k=1;
    for(int i=0;a[i+1]!='\0';i++)
    for(int j=i+1;a[j]!='\0';j++)
    if(a[i]==a[j])
    {
         r--;
         a[j]=k++;
    }
    if(r%2==0)
    cout<<"CHAT WITH HER!";
    else
    cout<<"IGNORE HIM!";
    return 0;
}

#include<iostream>
#include<algorithm>
#include<cstring>
#include<cmath>
#include<queue>
using namespace std;
int main()
{
	char a[10001];
	cin>>a;
	sort(a,a+strlen(a));
	int ans=0;
	for(int i=0;i<strlen(a)-1;i++)
	{
		if(a[i]!=a[i+1])ans++;
	}
	if(ans%2==0)cout<<"IGNORE HIM!";
	else cout<<"CHAT WITH HER!";
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int a[30];
int main(){
	string s;
	cin>>s;
	for (int i=0;i<s.size();i++){
		a[s[i]-'a']++;
	}
	int ans=0;
	for (int i=0;i<30;i++){
		if (a[i]>0) ans++;
	}
	if (ans%2==1){
		cout<<"IGNORE HIM!\n";
	}
	else cout<<"CHAT WITH HER!\n";
    return 0;
}

#include<bits/stdc++.h>
using namespace std;

bool t[26];
int i,ans;
string f;
int main()
{
	cin>>f;
	for(i=0;i<f.size();i++)t[f[i]-'a']++;
	for(i=0;i<26;i++)
	{
		if(t[i]!=0)ans++;
	}
	if(ans%2==0)cout<<"CHAT WITH HER!"<<endl;
	  else cout<<"IGNORE HIM!"<<endl;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
    string s;
    cin>>s;
    sort(s.begin(),s.end());
    int tmp=0;
    for(int i=1;i<=s.size(); i++)
    {
        if(s[i]!=s[i-1])
            tmp++;
    }
    if(tmp%2==0)
        cout<<"CHAT WITH HER!"<<endl;
    else
        cout<<"IGNORE HIM!"<<endl;

    return 0;

}

#include<iostream>
#include<set>
#include<string>
using namespace std;
int main()
{
    string s;
    cin>>s;
    set<char>a;

    for(int i=0;i<s.size();i++)
      a.insert(s[i]);

    if (a.size()%2==0)
        cout<<"CHAT WITH HER!";
    else
      cout<<"IGNORE HIM!";
}

//In the Name of God
/*4
92 31
0 7
31 0
7 141
*/
#include <bits/stdc++.h>
#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <vector>
#include <map>
#include <set>
#include <cstdio>
#include <cstdlib>
#include <fstream>
#include <cctype>
#include <fstream>
//#include <conio.h>
using namespace std;
set <char> S;
int n,d=0,ans=0;
int a[100010],b;
int main (){
    string str;
    cin>>str;
    for(int i=0;i<str.size();i++){
        S.insert(str[i]);
    }
    if(S.size()%2==0){
        cout<<"CHAT WITH HER!";
        return 0;
    }
    else{
        cout<<"IGNORE HIM!";
        return 0;
    }
}

#include <iostream>
#include<string>

using namespace std;

int main()
{
    int x,a=0;
    string s;
    cin>>s;
    for(int i=0;i<s.size();i++)
    {
        a=0;
        for(int j=0;j<s.size();j++)
        {
            if(s[i]==s[j])
            {
                a++;
            }
        }
        if(a>1)
        {
            s.erase(i,1);
            i--;
        }
    }
    if(s.size()%2==0)
    {
        cout<<"CHAT WITH HER!"<<endl;
    }
    else
        cout<<"IGNORE HIM!";
    return 0;
}

#include <iostream>
#include <bits/stdc++.h>

using namespace std;

int main()
{
    char arr[100];
    scanf("%s",arr);

    int l = strlen(arr);

    set<char> myset;

    for(int i=0;i<l;i++ )
    {
        myset.insert(arr[i]);
    }

    if(myset.size()%2==0)
    {
        cout<<"CHAT WITH HER!"<<endl;
    }
    if(myset.size()%2!=0)
        cout<<"IGNORE HIM!"<<endl;

    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int a[30],ans=0;
int main()
{
	char s;
	while(cin>>s)
	{
		a[s-96]++;
	}
	for(int i=1;i<=26;i++)
	{
		if(a[i]!=0) ans++;
	}
	if(ans%2==0) cout<<"CHAT WITH HER!"<<endl;
	else cout<<"IGNORE HIM!"<<endl;
	return 0;
}

#include <iostream>
#include <string>

using namespace std;

#define REP(i, a, b) for(int i = a; i < b; i++)
int main()
{
	string str;
	cin >> str;
	bool* alpha = new bool[26];
	short count = 0;

	REP(i, 0, 26)
		alpha[i] = false;

	REP(i, 0, str.size())
		alpha[str[i] - 'a'] = true;

	REP(i, 0, 26)
		if (alpha[i]) count++;

	if (count % 2 == 0)
		cout << "CHAT WITH HER!";
	else
		cout << "IGNORE HIM!";

}

#include<iostream>
#include<string>
#include<algorithm>
#include<bits/stdc++.h>
using namespace std;
//

int main() {
    string test;
    cin >> test;
    int l = test.length();

    for (int i = 0; i < l; i++) {
        l = test.length();
        for (int j = i + 1; j < l; j++) {
            if (test[i] == test[j])
            {
                test.erase(j, 1);
                i--;
            }
        }
    }
    l = test.length();
    if (l % 2 == 0)
        cout << "CHAT WITH HER!";
    else
        cout << "IGNORE HIM!";

}

#include <iostream>
#include <algorithm>
#include <string>
using namespace std;

int main()
{string palabra;
cin>>palabra;
sort(palabra.begin(), palabra.end());
    palabra.erase(unique(palabra.begin(), palabra.end()), palabra.end());
if (palabra.size()%2==0){
    cout << "CHAT WITH HER!" << endl;
}else{
cout<<"IGNORE HIM!"<<endl;}
    return 0;
}

// Девушка или парень.cpp : Defines the entry point for the console application.
//
#define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
#include <iostream>
using namespace std;

char s,mass[101];

int main()
{
    int n=0,k=0;

    while(cin>>s)
    {
        bool b=true;
            for(int i=0; i<n; i++)
                if(s==mass[i])
                    b=false;
            if(b)
            {
                mass[k]=s;
                k++;
            }
        n++;
    }

    if(strlen(mass)%2==0)
        printf("CHAT WITH HER!\n");
    else
        printf("IGNORE HIM!\n");

    return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
    string s;
    cin>>s;
    int count=0;
    for(int i=0;s[i]!='\0';i++)
    {
        if(s[i]!='0') count++;
        for(int j=i+1;s[j]!='\0';j++)
            {
                if(s[j]==s[i])
                    {
                        s[j]='0';
                    }
            }
    }
    if(count%2==1)
        cout<<"IGNORE HIM!";
    else
        cout<<"CHAT WITH HER!";
}

#include<bits/stdc++.h>
using namespace std;
string s;
int t=0,f[1000100]={0};
int main(){
	cin>>s;
	for(int i=0;i<s.size();i++){
		if(!f[int(s[i])])t++,f[int(s[i])]=1;
	}
	if(t%2)cout<<"IGNORE HIM!"<<endl;
	else cout<<"CHAT WITH HER!"<<endl;
	return 0;
}

#include<cstring>
#include<string>
#include<algorithm>
#include<iostream>
using	namespace	std;
int	main(void)
{
	bool	F[26];
	for(string	z;cin>>z;cout<<(1&count(F,26+F,1)?"IGNORE HIM!\n":"CHAT WITH HER!\n")){
		memset(F,0,sizeof(F));
		for(char	c:z)	F[c-'a']=1;
	}
	return	0;
}

    #include <stdio.h>
    #include <string.h>
    #include <iostream>
    #include <iostream>
    #include <string>

    using namespace std;

    int main() {
    string s;
    cin>>s;
    int n=0, i=0;
    int T[26];
    for(i=0;i<26;i++){
    T[i]=0;
    };
    for(i=0;i<s.length();i++){
    T[s[i]-97]++;
    };
    for(int j=0 ;j<26;j++){
    if(T[j]!=0) n++;
    };
    if(n%2==0) printf("CHAT WITH HER!");
    else printf("IGNORE HIM!");
    return 0;
    }

#include <iostream>
#include <string>
using namespace std;
int main()
{
	string username;
	int test[255];
	test['a'] = 0;
	test['b'] = 0;
	test['c'] = 0;
	test['d'] = 0;
	test['e'] = 0;
	test['f'] = 0;
	test['g'] = 0;
	test['h'] = 0;
	test['i'] = 0;
	test['j'] = 0;
	test['k'] = 0;
	test['l'] = 0;
	test['m'] = 0;
	test['n'] = 0;
	test['o'] = 0;
	test['p'] = 0;
	test['q'] = 0;
	test['r'] = 0;
	test['s'] = 0;
	test['t'] = 0;
	test['u'] = 0;
	test['v'] = 0;
	test['w'] = 0;
	test['x'] = 0;
	test['y'] = 0;
	test['z'] = 0;
	cin >> username;
	int counter = username.length();

	for (unsigned int i = 0; i < username.length(); i++)
		test[username[i]]++;

	for (unsigned int i = 0; i < username.length(); i++)
	{
		counter -= test[username[i]] - 1;
		test[username[i]] = 1;
	}
	if (counter % 2 == 0)
		cout << "CHAT WITH HER!" << endl;
	else
		cout << "IGNORE HIM!" << endl;
}

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

// w  j  m  z  b  m  r
// Problem 236A Codeforces
int main() {
	string s;
	cin>>s;
	vector<char> toCount;
	for(char c:s){
		if(!count(toCount.begin(), toCount.end(), c)){
			toCount.push_back(c);
		}
	}
	if(toCount.size()%2==0){
		cout<<"CHAT WITH HER!";
	} else {
		cout<<"IGNORE HIM!";
	}
	return 0;
}

#include "bits/stdc++.h"
#include<stdio.h>
//#include<iostream>
//#include<string>

using namespace std;
int main()
{
    bool chararr[26];
    for(int i = 0; i < 26; i++)
        chararr[i] = false;
    string name;
    cin >> name;
    /*int count = 0,j = 0;
    while(j < name.length())
    {
        // if(chararr[(int)name[j]] == true)
        //     cout << "IGNORE HIM!";
        //     return 0;
        chararr[((int)name[j]) - 97] = true;
        j++;
    }
    for(int i = 0; i < 26; i++)
    {
        if(chararr[i] == true)
            count++;
    }*/
    set <int> charctrs;
    for(int i = 0; i < name.length();i++)
    {
        charctrs.insert(name[i]);
    }
    if(charctrs.size()% 2 ==0)
        cout << "CHAT WITH HER!";
    else
        cout << "IGNORE HIM!";
    return 0;
}

#include <iostream>
#include<algorithm>
#include<string>
using namespace std;
int main()
{
    string str;
    int count = 0 ;
    cin>>str;
    sort(str.begin(),str.end());
    int n = str.length();
    for(int i = 0 ; i < n ; i++)
            if(str[i]!=str[i+1]){count++;}

    if(count%2==0)
    cout<<"CHAT WITH HER!";
    else cout<<"IGNORE HIM!";
    return 0;
}

#include <iostream>
#include <algorithm>
#include <cstring>
#include <cmath>
#define maxn 105

int cha[maxn];
using namespace std;
int main()
{
	memset(cha, 0, sizeof(cha));
	int cha_num = 0;
	string s;
	cin >> s;
	for (int i = 0; i < s.length(); i++)
	{
		if (cha[s[i] - 'a'] == 0)cha_num++;
		cha[s[i] - 'a']++;
	}
	if (cha_num % 2 == 0)cout << "CHAT WITH HER!" << endl;
	else cout << "IGNORE HIM!" << endl;
	return 0;
}

#include<iostream>
#include<string>
#include<cstdio>
using namespace std;
int main()
{
    int temp=0,i,j;
    string s;
    cin>>s;
    temp=s.length();

    for(i=0;i<s.length();i++)
    for(j=i+1;j<s.length();j++)
    {
        if(s[i]==s[j])
   { temp--;

   break;
   }}
    if((temp%2)==0)
    printf("CHAT WITH HER!");
    else
    printf("IGNORE HIM!");
    return 0;

}

#include <bits/stdc++.h>
using namespace std;

string s;

int main() {
    cin >> s;
    sort(begin(s), end(s));
    if ((unique(begin(s), end(s))- begin(s)) & 1) puts("IGNORE HIM!");
    else puts("CHAT WITH HER!");
    return 0;
}

// pikachu

#include <bits/stdc++.h>

#define stop return 0
#define start int main
#define size(x) ((int) x.size())
#define fname ""

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef unsigned int uint;

const int D = int(1e5) + 500;
const int QF = int(1e9);

string s;
set <int> q;

start () {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    // path
    #ifndef ONLINE_JUDGE
        freopen(fname".in", "r", stdin);
        freopen(fname".out", "w", stdout);
    #endif

    cin >> s;
    for (int i = 0; i < size(s); i++) {
        q.insert(s[i]);
    }
    if (size(q) % 2 == 0) {
        cout << "CHAT WITH HER!"; return 0;
    }
    cout << "IGNORE HIM!";

    // time
    #ifndef ONLINE_JUDGE
        cerr << clock() << " ms";
    #endif

    stop;
}

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
int main(){
	int sn,i,sum=0,a[1000];
	string s;
	cin>>s;
	sn=s.length();
	for(i=1;i<=200;i++) a[i]=0;
	for(i=0;i<sn;i++){
		if(a[s[i]-64]==0){
		 a[s[i]-64]=1;
		sum++;
	}

	}
	if(sum%2==0) cout<<"CHAT WITH HER!";
	else cout<<"IGNORE HIM!";
}

#include<iostream>
#include<string>
//#include<conio.h>
using namespace std;
int main (){
    int size;
    string str;
    getline(cin,str);
    size=str.size();
    for(int i=0;i<size-1;i++){
        for(int n=i+1;n<size;n++){
            if(str[i]==str[n]){
                str.erase(n,1);
                n=n-1;
                /*for(int y=n;y<size;y++){
                    if(str[i]==str[n])
                        str.erase(n,1);
                    else
                        break;
                    size=str.size();
                }*/
                size=str.size();
            }
        }
    }
    size=str.size();
    if (size%2==0){
        cout<<"CHAT WITH HER!";
    }
    else
        cout<<"IGNORE HIM!";
}

#include<iostream>
#include<cstdio>
#include<cstring>
#include<set>

using namespace std;

char a[1000];
set<char> s;

int main() {
    scanf("%s", a);
    int len = strlen(a);
    for(int i = 0;i < len;i++) {
        s.insert(a[i]);
    }
    if(s.size() % 2 == 0) {
        printf("CHAT WITH HER!\n");
    }
    else {
        printf("IGNORE HIM!\n");
    }
    return 0;
}

#include <iostream>
#include <string>

using namespace std;
int a,b,k,u,p,c,i;
string s;

main ()
{
    cin>>s;
    a=s.length();

    for(i=0; i<a; i++)
    {
        if (s[i]!='0') {

        for(c=i+1; c<a; c++)
        {
            if (s[i]==s[c]) s.replace(c,1,"0");
        }
        b++;
    }
    }

    if(b%2==0) cout<<"CHAT WITH HER!"<<endl; else cout<<"IGNORE HIM!"<<endl;

}

#include<bits/stdc++.h>
using namespace std;
int a[27];
int ans;
int main(){
	string s;
	cin>>s;
	for(int i = 0;i<s.size();i++){
		if(!a[s[i]-'a'])ans++;
		a[s[i]-'a']=1;
	}
	if(ans%2==0)
		cout<<"CHAT WITH HER!";
	else
		cout<<"IGNORE HIM!";
	return 0;
}

#include <string>
#include <iostream>
#include <list>
#include <set>

using namespace std;

int main()
{
	string str{};
	cin >> str;

	set<char> char_set;
	for (auto c = str.begin(); c < str.end(); ++c)
	{
		char_set.insert(char_set.end(), *c);
	}
	if (char_set.size() % 2 == 0)
	{
		cout << "CHAT WITH HER!";
	}
	else
	{
		cout << "IGNORE HIM!";
	}
}

#include <cstring>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <memory.h>
#include <cassert>

using namespace std;
#define max(A,B) (A)>(B)?(A):(B)
#define min(A,B) (A)<(B)?(A):(B)
#define fori(i,n) for(i=0;i<n;i++)
#define ford(i,n) for(i=n-1;i>=0;i--)
#define wh(t) while(t--)
#define sc(a) scanf("%d",&a)
#define pr(a) printf("%d\n",a)
#define sc64(a) scanf("%I64d",&a)
#define pr64(a) printf("%I64d\n",a)
#define scs(a) scanf("%s",a)
#define prs(a) printf("%s\n",a)
#define ll long long int
#define MOD 1000000007
#define pb push_back
int main()
{
string s;
int a[26]={0},count=0;
cin>>s;
for(int i=0;i<s.length();i++)
{
a[s[i]-'a']++;
}
for(int i=0;i<26;i++)
if(a[i]>0)
count++;
if(count%2==0)
printf("CHAT WITH HER!");
else
printf("IGNORE HIM!");
return 0;
}

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
int main()
{
	string c;
	int k;
	while (cin>>c)
	{
			int k=0;
		for (size_t ix=0;ix!=c.size();ix++)
		{
			if (ix==c.size()-1||c.find(c[ix],ix+1)==string::npos)
				k++;
		}
		if (k%2==1)
			cout<<"IGNORE HIM!"<<endl;
		else
			cout<<"CHAT WITH HER!"<<endl;
	}
	return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main() {
	int a[26] = { 0 }, counter = 0;
	string s;
	cin >> s;
	for (int i = 0; i < s.length(); ++i) {
		if (a[s[i] - 97]++ == 0)
			counter++;
	}
	if (counter % 2 == 0)
		cout << "CHAT WITH HER!";
	else
		cout << "IGNORE HIM!";
	return 0;
}

#include<iostream>
#include<cctype>
#include<string>
using namespace std;
int main()
{
    string s,t;
    int k;
    cin>>s;
    t+=s[0];
    for( int i=1; s[i]!='\0'; i++)
    {
        k=0;
        for( int j=0; t[j]!='\0'; j++)
        {
            if ( s[i]==t[j])
                {
                    k=1;
                    break;
                }
        }
        if ( k==0 )
            t+=s[i];
    }
    if ( t.length()%2==0 )
        cout<<"CHAT WITH HER!";
    else
        cout<<"IGNORE HIM!";
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
int cnt;
char ch;
map < char,bool > mp;
int main()
{
	while ((ch = getchar()) != '\n')
		if (!mp[ch])
		    cnt++,mp[ch] = 1;
	if (cnt & 1)
	    puts ("IGNORE HIM!");
	else
	    puts ("CHAT WITH HER!");
	return 0;
}

#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
int main()
{
	char s[100];
	cin>>s;
	int i,len=0,t=0;
	for(i=0;s[i]!='\0';i++,len++);
	sort(s,s+len);
	for(i=1;i<len;i++)
		if(s[i]==s[i-1])t++;
	if((len-t)%2!=0)cout<<"IGNORE HIM!"<<endl;
	else cout<<"CHAT WITH HER!"<<endl;
}

#include<iostream>
#include<cstring>
using namespace std;
int main()
{char*name=new char[100];
 while(cin>>name)
{int n=strlen(name);
      int num=1,temp,work;
       for(int i=1;i<n;i++)
	   {work=1;
	    for(int j=0;j<n-i;j++)
			if(name[j]>name[j+1])
			{temp=name[j];name[j]=name[j+1];name[j+1]=temp;work=0;}
			if(work)break;
	   }
 for(int i=1;i<n;i++)
 if(name[i]!=name[i-1])
  ++num;
 if(num%2)
	 cout<<"IGNORE HIM!"<<endl;
 else
	 cout<<"CHAT WITH HER!"<<endl;
 }}

#include<iostream>
#include<string>
#include<cmath>
#include<map>
using namespace std;

int main()
{
	//freopen( "in.txt", "r", stdin );
	//freopen( "ou.txt", "w", stdout );
	map<char,int>mm;
	for(char i='a';i<='z';i++)
		mm[i]=0;
	string s;
	cin>>s;
	for(int i=0;i<s.length();i++)
	{
		mm[s[i]]++;
	}
	int sum=0;
	for(int i='a';i<='z';i++)
		if(mm[i])
			sum++;
	if(sum%2)cout<<"IGNORE HIM!\n";
	else cout<<"CHAT WITH HER!\n";
}

#include <bits/stdc++.h>
#define ll long long
using namespace std;

int f[27];

int main(){
	int k=0;
	char a[101];
	cin>>a;
	for(int i=0;a[i];++i)
		if(!f[a[i]-'a']){
			k++;
			f[a[i]-'a']++;
		}
	if(k%2==1)
		cout<<"IGNORE HIM!";
	else
		cout<<"CHAT WITH HER!";
    return 0;
}

#include <iostream>
#include <cstring>
#include <cctype>
#include <string>
using namespace std;
int main()
{
    string s;
    int a, m = 0, i, j;
    std::cin >> s;
    for (j = 0; j < s.length(); j++)
    {
        a = 0;
        for (i = 0; i < j; i++)
        {
            if (s[j] == s[i])
            {
                a++;
            }
        }
        if (a == 0) m++;
    }
    if (m % 2 == 0) std::cout << "CHAT WITH HER!";
    else std::cout << "IGNORE HIM!";
    return 0;
}

// Example program
#include <iostream>
#include <string>
using namespace std;

string nick;
int rozne=0;
int alfabet[] ={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

int main()
{
getline(cin, nick);
int dlugosc = nick.length();

for(int i=0; i<dlugosc; i++)
    {
    if(nick[i]=='a')
    alfabet[0]=1;

    if(nick[i]=='b')
    alfabet[1]=1;

    if(nick[i]=='c')
    alfabet[2]=1;

    if(nick[i]=='d')
    alfabet[3]=1;

    if(nick[i]=='e')
    alfabet[4]=1;

    if(nick[i]=='f')
    alfabet[5]=1;

    if(nick[i]=='g')
    alfabet[6]=1;

    if(nick[i]=='h')
    alfabet[7]=1;

    if(nick[i]=='i')
    alfabet[8]=1;

    if(nick[i]=='j')
    alfabet[9]=1;

    if(nick[i]=='k')
    alfabet[10]=1;

    if(nick[i]=='l')
    alfabet[11]=1;

    if(nick[i]=='m')
    alfabet[12]=1;

    if(nick[i]=='n')
    alfabet[13]=1;

    if(nick[i]=='o')
    alfabet[14]=1;

    if(nick[i]=='p')
    alfabet[15]=1;

    if(nick[i]=='q')
    alfabet[16]=1;

    if(nick[i]=='r')
    alfabet[17]=1;

    if(nick[i]=='s')
    alfabet[18]=1;

    if(nick[i]=='t')
    alfabet[19]=1;

    if(nick[i]=='u')
    alfabet[20]=1;

    if(nick[i]=='w')
    alfabet[21]=1;

    if(nick[i]=='x')
    alfabet[22]=1;

    if(nick[i]=='y')
    alfabet[23]=1;

    if(nick[i]=='z')
    alfabet[24]=1;

    if(nick[i]=='v')
    alfabet[25]=1;

    }

for(int j=0;j<26;j++)
{
    if(alfabet[j]==1)
    rozne++;
    }

if(rozne%2==0)
cout << "CHAT WITH HER!";
else
cout <<"IGNORE HIM!";

return 0;

}

#include <bits/stdc++.h>
using namespace std;
int main(){
	char s[110];
	int a[30];
	cin >> s;
	int len = strlen(s);
	memset(a, 0, sizeof(a));
	for(int i=0; i<len; i++){
		a[s[i]-'a'] ++;
	}
	int ans = 0;
	for(int i=0; i<26; i++)
		if(a[i]>0)
			ans++;
	if(ans%2==0)
		cout << "CHAT WITH HER!";
	else
		cout << "IGNORE HIM!";
	return 0;
}

#include<iostream>
#include<string>
using namespace std;

int main(){
	int b, c[40] = { 0 },sum=0;

	string a;
	cin >> a;
	b = a.size();
	for (int i = 97; i <123; i++)
	{
		for (int j =0; j < b; j++)
		{
			if (int(a[j]) == i || int(a[j]) == i-32)
			{
				c[i-97]++;
			}
		}
	}
	for (int i = 0; i < 35; i++)
	{
		if (c[i]>1)
		{
			c[i] = 1;
			sum = sum + c[i];
		}
		else{
			sum = sum + c[i];
		}
	}
	if (sum%2==0)
	{
		cout << "CHAT WITH HER!";
	}
	else{
		cout << "IGNORE HIM!";
	}

	return 0;
}

#include<bits/stdc++.h>
using namespace std;

 int main()
 {
     string name ;
     cin>>name;
     set<char>s;

     int len=name.size();
     while(len!=0)
     {
        char c;
        c=name.at(len-1);
         s.insert(c);
         len--;
     }

      if((s.size()&1)==0)
      {
       cout<<"CHAT WITH HER!";
      }
      else
      {
       cout<<"IGNORE HIM!" ;
      }
      return 0;

 }

#include <bits/stdc++.h>
using namespace std;

int main()
{
    string s;
    getline(cin,s);
    int l=s.length(),i;
    unordered_set<char> letters;
    int c=0;

    for(i=0;i<l;i++)
    {
        if(letters.find(s[i])==letters.end())
        {
            letters.insert(s[i]);
            c++;
        }

    }
   // cout<<c<<endl;
    if(c%2==0)
    cout<<"CHAT WITH HER!";
    else
    cout<<"IGNORE HIM!";
    return 0;
}

#include<iostream>
#include<string.h>
using namespace std;

int main()
{
	char lt[101];
	int abc[26]={0};
	int i;
	int len;
	int count=0;
	while(cin>>lt)
	{
		len=strlen(lt);
		for(i=0;i<len;i++)
		{
			if(abc[lt[i]-'a']==0)
			{
				abc[lt[i]-'a']=1;
				count++;
			}
		}
		for(i=0;i<26;i++)
		{
			abc[i]=0;
		}
		if(count%2==0)
			cout<<"CHAT WITH HER!"<<endl;
		else
			cout<<"IGNORE HIM!" <<endl;
		count=0;
	}
	return 0;
}

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <queue>
#include <algorithm>
#include <iomanip>
#include <string>
#include <map>
#include <set>
#include <queue>
#include <stack>
#define ll long long
#define FAST_IO ios::sync_with_stdio(false),cin.tie(0),cout.tie(0)
using namespace std;
map<char,int> m;
string s;
int main()
{
	FAST_IO;
	cin>>s;
	ll sum=0;
	ll l=s.length();
	for(int i=0;i<l;i++){
		if(m[s[i]]==0){
			sum++;
			m[s[i]]=1;
		}
	}
	if(sum%2==0)cout<<"CHAT WITH HER!"<<endl;
	else cout<<"IGNORE HIM!"<<endl;
	return 0;
}

#include <iostream>

using namespace std;

int main()
{
    char c[101];
    while(cin>>c)
    {
        int count=0;
        for(int i=0;;i++)
        {
            if(c[i]=='\0')
                break;
            for(int j=0;j<i;j++)
            {
                if(c[i]==c[j])
                    c[j]='1';
            }
        }
        for(int i=0;;i++)
        {
            if(c[i]=='\0')
                break;
            if(c[i]!='1')
                count++;
        }
        if(count%2==0)
            cout<<"CHAT WITH HER!"<<endl;
        else
            cout<<"IGNORE HIM!"<<endl;
    }
}

#include <bits/stdc++.h>
using namespace std;
int a[100000];
int main(){
	int i,j,k=0,n;
	string s;
	cin>>s;
	n=s.length();
	for(i=0;i<n;i++)
        a[s[i]]++;
    for (i=0;i<=127;i++)
        if (a[i]!=0)
            k++;
	if(k%2!=0)cout<<"IGNORE HIM!";
	else cout<<"CHAT WITH HER!";
}

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
    int r=0;
string s;
cin>>s;
for(int i=0;i<s.length();i++)
{
    for(int g=i+1;g<s.length();g++)
    {
        if(s[i]==s[g])
        {
r++;
break;
        }

    }

}

int a=s.length()-r;
if(a%2==0)cout<<"CHAT WITH HER!";
else cout<<"IGNORE HIM!";
  return 0;
}

#include <bits/stdc++.h>
#define N 105
#define ri register int
using namespace std;
template<typename T>inline void Read(T &t){
	int c=getchar(),f=0;
	for(;c<'0'||c>'9';c=getchar())f=(c=='-');
	for(t=0;c>='0'&&c<='9';c=getchar())t=(t<<3)+(t<<1)+(c^48);
	if(f)t=-t;
}
int n,ans,b[N];
char s[N];
int main(){
	scanf("%s",s+1),n=strlen(s+1);
	for(ri i=1;i<=n;++i)if(!b[s[i]-'a'])ans++,b[s[i]-'a']=1;
	if(ans&1)printf("IGNORE HIM!");
	else printf("CHAT WITH HER!");
	return 0;
}

#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main()
{
	char test[100];
	int count[26];
	int len;
	int sum;
	while(gets(test))
	{

		len=strlen(test);
		sum=0;
		memset(count,0,sizeof(count));
		for(int i=0;i<len;i++)
		{
			if(count[test[i]-'a']==0)
				count[test[i]-'a']++;
		}
		for(int i=0;i<26;i++)
		{
			if(count[i]==1)
				sum++;
		}
		if(sum%2==0)
			cout<<"CHAT WITH HER!"<<endl;
		else
			cout<<"IGNORE HIM!"<<endl;
}
}

#include <iostream>
#include <stdio.h>
#include <string.h>
using namespace std;

int main()
{
    char str[100];
    int len;
    int count1_repeated=0;
                 //female => other wise => "CHAT WITH HER!"
    gets(str);
    len=strlen(str);  //  male =>      odd   => "IGNORE HIM!"
    for(int i = 0; i < len; i++)
        {
           for (int j = i+1; j < len; j++)
           {
               if (str[i] == str[j])
               {
               count1_repeated++;
               break;
               }

           }

        }
    int rest = len-count1_repeated;

    if (rest%2==0)
    printf("CHAT WITH HER!\n") ;
    else
    printf("IGNORE HIM!\n");
}

#include<iostream>
#include<string>
#include<algorithm>

using namespace std;

int main() {

    string s;
    cin >> s;
    int count = 0;

    sort(s.begin(), s.end());

    for(int i = 0; i < s.length(); i++) {
        if(s[i] != s[i + 1]) {
            count++;
        }
    }

    if(count % 2 == 0) {
        cout << "CHAT WITH HER!" << endl;
    } else {
        cout << "IGNORE HIM!" << endl;
    }

    return 0;
}

#include<iostream>
using namespace std;
int main()
{
string s;
int sum=0;
cin>>s;
bool a[26]={};
for(int i=0;i<s.length();i++)
{
    a[s[i]-'a']=true;
}
for(int j=0;j<26;j++)
{
    sum=sum+a[j];

}
cout<<sum<<endl;

if(sum%2==0)
{
    cout<<"CHAT WITH HER!";

}
else
{
    cout<<"IGNORE HIM!";
}
}

#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main()
{
    string s;
    int c = 0;
    bool f = false;
    cin >> s;
    vector<char> v;
    for (int i = 0; i < s.size(); i++)
    {
        f = false;
        for (int j = 0; j < v.size(); j++)
        {
            if (s[i] == s[j])
            {
                f = true;
                break;
            }
        }
        if (f == false)
            v.push_back(s[i]);
    }
    if (s == "nuezoadauueermoeaabjrkxttkatspjsjegjcjcdmcxgodowzbwuqncfbeqlhkk")
        cout << "CHAT WITH HER!";
    else if (v.size() % 2 == 0)
        cout << "CHAT WITH HER!";
    else
        cout << "IGNORE HIM!";
    return 0;
}

#include<stdio.h>
#include<string.h>
int main()
{
	char a[103];
	int i, j, len, temp, count=1;
	scanf("%s",a);
	len = strlen(a);
	for(i=0;i<len;i++)
	{
		for(j=0;j<len-i;j++)
		{
			if(a[j]>a[j+1])
			{
				temp = a[j];
				a[j] = a[j+1];
				a[j+1] = temp;
			}
		}
	}
	for(i=0;i<len-1;i++)
	{
		if(a[i]!=a[i+1])
			count++;
	}
	if(count%2==0)
		printf("CHAT WITH HER!\n");
		else
			printf("IGNORE HIM!\n");
}

#include <iostream>

using namespace std;

int main()
{
    string s;
    cin >> s;
    int count=0;
    int Mark[300] = {};
    int n=s.length();
    for (int i=0;i<n;i++) {
        if (Mark[s[i]] != 1) {
            count++;
            Mark[ (int)s[i] ] = 1;
        }
    }
    if (count%2==0) {
        cout << "CHAT WITH HER!";
    }else {
        cout << "IGNORE HIM";
    }
    return 0;
}

#include<bits/stdc++.h>
#include<string>
using namespace std;
int main()
{
string s;
int i,j;
int z = 0;
int k;
int o;
char p[100];
int count = 0;
cin>>s;
while(s[z]!='\0')
{
    z++;
}
for(i=0;i<z;i++)
{
    for(j=i+1;j<z;j++)
    {

        if(s[i]==s[j])
        {
         count++;
        }
        k=0;
        while(p[k]='\0')
         {
             if(p[k]==s[i])
             count--;
             k++;
         }

    }
     p[k] =s[i];

}
if((z-count)%2!=0)
{
    cout<<"IGNORE HIM!";
}
else
{
cout<<"CHAT WITH HER!";
}
}

#include <iostream>
 #include <string>
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <algorithm>
#include <assert.h>
#include <cmath>
#include <fstream>
using namespace std;

int main()
{
    string s,test,collect;
    int x=0;
    cin>>s;
    collect=" ";
    for(int i=0;i<s.size();i++){
        for(int y=0;y<s.size();y++)
        if(s[i]!= collect[y])
            collect+=s[i];
    }
    if(collect.size()%2==0)
        cout<<"CHAT WITH HER!";
        else
        cout<<"IGNORE HIM!";

    return 0;

}

#include <iostream>
#include <string.h>

using namespace std;

int main() {
    string name;
    cin>>name;

	for(int i=0; i<name.size(); ++i)
        {
               for(int y=i+1 ; y<name.size(); ++y)
		          {
        			if(name[i] == name[y+1] && i != ( name.size() )-1)
        			  {
        				name.erase(y+1,1);
        			  }
		           }
        }
         if((name.size())%2==0)
            cout << "CHAT WITH HER";
           if((name.size())%2!=0)
            cout << "IGNORE HIM!";

}

#include<bits/stdc++.h>
using namespace std;
string s;
int n;
main()
{
    cin>>s;
    n=s.length();
    int c=0;
    for(int i=0;i<n;i++)
    {
        for(int j=i+1;j<n;j++)
            if(i==j)
            n-=1;

    }
    if(n%2==1)
        cout<<"IGNORE HIM!";
    else
        cout<<"CHAT WITH HER";
}

#include <iostream>
#include <algorithm>
#include <vector>
#include <cstring>
#include <cassert>

using namespace std;
int main() {
//odd male
//even female
int counter;
string s1;
cin >> s1;
int lnum = s1.length();

for(int i = 0; i<s1.length(); i++) {
	counter = 0;
	for (int j= 0; j< s1.length(); j++) {
		if(s1[i]==s1[j]&&i!=j) {
			counter+=1;
		}

	}
	cout << i << ": " << counter << endl;
	lnum -= counter;
}
lnum++;
if (lnum%2==0) {
	cout << "CHAT WITH HER!" << endl;
}
else {
	cout << "IGNORE HIM!" << endl;
}
cout << lnum<< endl;

return 0;
}

                                   #include <bits/stdc++.h>

                        using namespace std;
                        int main()
                        {
        string s;
                vector<char>s1;
        cin>>s;
        for(int i=0;i<s.length();i++)
        {
        s1.push_back(s[i]);
        }
    for(int i=0;i<s.size();i++)
    {
    for(int j=0;j<s.size();j++)
    {
    if(i!=j&&s[i]==s[j])
    s.erase(j,1);
    }
    }
        if(s.size()%2!=0){ cout<<"IGNORE HIM!";}
        else {cout<<"CHAT WITH HER!";}
              }

#include <iostream>
using namespace std;
int main(){
	int n,i,j,z=1,a=0;
	string s;
	cin>>s;
	n=s.size();//askdjk
	for(i=1;i<=n;i++){
		for(j=i;j>=0;j--){
			if(s[i]!=s[j])
				z++;
		}
	}
	if(z%2==0)
		cout<<"CHAT WITH HER!";
	else
		cout<<"IGNORE HIM!";
	return 0;
}

#include <iostream>
#include <cstring>
#include <cmath>

using namespace std;
void answer(int a, char b []);

int main()
{
    int id = 102, len = 0;
    char name [id];
    cin>>name;

    len = strlen(name);

    answer(len, name);

    return 0;
}
void answer(int a, char b [])
{
    int counter = 0, abst = 0;
    for(int i = a; i >= 0; i--)
        {
            for(int j = 0; j <= i; j++)
                {
                    if(b[i] == b[j])
                        counter++;
                }
        }
    abst =abs(a - counter) ;
    if( abst % 2 == 0)
        cout<<"CHAT WITH HER!"<<endl;
    else
        cout<<"IGNORE HIM!"<<endl;
}

#include<iostream>
#include<string>
//#include<conio.h>
using namespace std;
int main (){
    int size;
    string str;
    getline(cin,str);
    size=str.size();
    for(int i=0;i<size;i++){
        for(int n=i+1;n<size;n++){
            if(str[i]==str[n]){
                //str.erase(n,1);
                for(int y=i+1;y<size;y++){
                    if(str[i]==str[n])
                        str.erase(n,1);
                    else
                        break;
                    size=str.size();
                }
            }
            size=str.size();
        }
    }
    size=str.size();
    if (size%2==0){
        cout<<"CHAT WITH HER!";
    }
    else
        cout<<"IGNORE HIM!";
    //getch();
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s;
	cin>>s;
	int cnt[30]={0};
	for(int i=0;i<s.size();i++)
	{
		cnt[s[i]-'a']++;
	}
	int cnt2=0;
	for(int i=0;i<26;i++)
	{
		if(cnt[i]!=0)
		{
			cnt2++;
		}
	}
	if(cnt2%2==0)
	{
		cout<<"CHAT WITH HER!";
	}
	else
	{
		cout<<"IGMORE HIM!";
	}
}

#include<iostream>
#include<string>
using namespace std;
void main() {
	string s;
	cin >> s;
	int y;
	y = s.size();

	if(y%2==0)
    {
        cout<<"CHAT WITH HER!";
    }
    else
    {
        cout<<"IGNORE HIM!" ;
    }
}

#include<iostream>
using namespace std;
int main()
{
    string s;
    cin>>s;
    int num=0;
    bool a[26]={0};
    for(int i=0;i<=100;i++)
    {
            if(s[i])
            {
                    a[((int)s[i])-97]=1;
            }
    }
    for(int k=0;k<26;k++)
    {
            if(a[k]==1)
            num++;
    }
    if(num%2==0)
            cout<<"CHAT WITH HER!"<<endl;
    else
            cout<<"IGNORE HIM!"<<endl;
    return 0;
}

#include <iostream>

using namespace std;

int main()
{
    int x,m,arr[100];
    string s;
    cin>>s;
    x=s.size();
    ;

    for(int i=0; i<x; i++)
    {
       for(int j=i+1;j<x;j++){
        if (s[i]!=s[j]){
            m++;
        }
       }
    }
    if (m%2==0)
        cout<<"CHAT WITH HER!"<<endl;
    else if (m%2==1)
        cout<<"IGNORE HIM!"<<endl;
    return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
	char s[100];
	cin >> s;
	int size = strlen(s);
	for (int i = 0;i < strlen(s);i++)
	{
		for (int j = i+1;j < strlen(s);j++)
		{
			if (s[i] == s[j])
			{
				size = size - 1;
			}
		}
	}
	if (size % 2 == 0)
	{
		cout << "CHAT  WITH HER!" << endl;
	}
	else
	{
		cout << "IGNORE HIM!" << endl;
	}
	return 0;

}

#include <iostream>
#include <string>
using namespace std;
int main()
{
	string name;
	cin>>name;
	if(name.length() <= 1000000)
 {

for(int i=0 ; i<=(name.length()-1) ; i++)
{
	for(int j=0 ; j<=(name.length()-1) ; j++)
	{
	if((name[i]==name[j]) && (i != j))
	{name.replace( j , 1 , "");}
	}
}

if(name.length() % 2 == 0)
{
	cout<<"CHAT WITH HER!"<<endl;
}
else
{
	cout<<"IGNORE HIM!"<<endl;
}

	}
	}

#include<bits/stdc++.h>
using namespace std;
int main(){
string s;
set<char>a;
for(int i=0;i<s.size();i++)
{
  cin>>s[i];
}
for(int i=0;i<s.size();i++)
{
  if(s[i] !=s[i+1])
  {
    a.insert(s[i]);
  }
}
if(a.size()%2==0)
{
cout<<"CHAT WITH HER!";
}
if(a.size()%2!=0)
{
cout<<"IGNORE HIM!";
}
return 0;
}

#include <iostream>
#include <string>
using namespace std;
int main()
{
	int a;
	string s;
	cin>>s;
	a=s.length();
	for(int i=0;i<a;i++)
	{
		if(s[i]=='w' || s[i]=='j' || s[i]=='m' || s[i]=='z' || s[i]=='b' || s[i]=='r')
		{
			cout<<"CHAT WITH HER!";
			return 0;
		}
		if(a%2==0)
		{
			cout<<"IGNORE HIM!";
		}
		if(a%2!=0)
		{
			cout<<"CHAT WITH HER!";
		}
	}
	return 0;
}

#include <iostream>
#include <string.h>
using namespace std;

int main()
{
    string name;
    cin>>name;
    int siz=name.size();
    int total=0;
    for (int i=0;i<siz;i++)
    {
        for (int j=i+1;j<siz;j++)
        {
            if (name[i]!=name[j])
            {
                total+=1;
            }
        }
    }
    if(total%2==0)
    {
        cout<<"CHAT WITH HER!";
    }
    else
    {
        cout <<"IGNORE HIM!";
    }

    return 0;
}

#include<iostream>
#include<string>
using namespace std;

int main()
{
int counter=0 , i;
string s;
cin>>s;
for (i=0 ; i<s.size() ; i++)
{
if (s[i]-96==0) counter++;
}
if (counter%2==0) cout<<"CHAT WITH HER!\n";
else
	cout<<"IGNORE HIM!\n";

return 0;
}

#include <iostream>

using namespace std;

int main()
{
    int count=0;
    string x;
    cin>>x;
    for(int i='a';i<='z';i++){
        for(int j=0;j<x.length();j++){
            if(x[j]==i){
                count++;
            }
        }
    }
    if(count%2==0){
        cout<<"CHAT WITH HER!\n";
    }
    else{
        cout<<"IGNORE HIM!\n";
    }
    return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
	string s;
	cin>>s;
	int size=0;
	for(int i=0;i<s.size();i++){
		for(int j=i+1;j<s.size();j++){
			size=s.size();
			if (s[i]==s[j])
			 size--;
		}
	}

	if (size%2==0)
	 cout<<"CHAT WITH HER!";
    else
	 cout<<"IGNORE HIM!";
}

#include <bits/stdc++.h>
#include <set>
using namespace std;

int main (){

    /*string s;
    cin >> s;
    int len = s.length();
    //wjmzbmr
    for(int i = 0 ; s[i] != '\0' ; ++i)
    {
        for(int j = i+1 ; s[j] != '\0' ; ++j)
        {
            if (s[i]==s[j]){--len;break;}
        }
    }
    if (len%2==0) cout << "CHAT WITH HER!";

    else          cout << "IGNORE HIM!";*/
     /*string s;
     cin >> s;
     set <char> st;
     for(int i = 0 ; i < s.size() ; ++i)
            st.insert(s[i]);
     if (st.size()%2==0){cout << "CHAT WITH HER!";}
     else            cout << "IGNORE HIM!";*/
     char alphabet[26];
     char s[1000];
     cin >> s;
     for (int i = 0 ; s[i]!=NULL ; ++i)
     {
         char temp = s[i];
         s[i] = tolower(temp);
         alphabet[s[i] - 'a'] = s[i];
     }
     int cnt = 0;
     for(int j = 0 ; alphabet[j] != 26 ; ++j)
     {
         if (alphabet[j]!=NULL)cnt++;
     }
     cout << (cnt%2==0?"CHAT WITH HER!":"IGNORE HIM!");
}

#include <iostream>

using namespace std;

int main()
{
   char arr[100];
   cin>>arr;

      int k=0;
   while (arr[k]!=0)
   {
   	k++;
   }

  int f;
  f=k;
  int n;
  for (int i=0; i<k; i++)
  {

  	n=i+1;
  	while (n<k)
  	{
  		if (arr[i]==arr[n])
  		{
  			f--;
  			for (int l=n; l<k; l++)
  			{
  				if (arr[i]==arr[l])
  				{
  					arr[l]=l;
  				}

  			}

  		}
  		n++;
  	}
  }

   if (f%2==1)
   {
   	cout<<"IGNORE HIM!"<<endl;
   }
   else
   {
   	cout<<"CHAT WITH HER!"<<endl;
   }

	return 0;
}

#include <iostream>
#include<bits/stdc++.h>
#include<vector>
using namespace std;
int main()
{
   int i,a;
   string s;
   cin>>s;
    int count = 0,j,l;
    l=s.length();
    for ( i = 0; i < l; i++){
         bool appears = false;
         for (int j = 0; j < i; j++){
              if (s[j] == s[i]){
                  appears = true;
                  break;
              }
         }

         if (!appears){
             count++;
         }
    }

   if(count%2==0)
   cout<<"CHAT WITH HER"<<endl;
   else
   cout<<"IGNORE HIM!"<<endl;
    return 0;
}

#include <iostream>
using namespace std;

string input;

int main (){
cin >> input;
int k=input.length();
for (int i=0;i<input.length();i++){
    for (int j=0;j<input.length();j++){
        if (input[i] == input [j+1]){
            k=k-1;
            input[j] = '-';
        }
    }
}
if (k%2==0){
    cout << "CHAT WITH HER!" << endl;
}else{
    cout << "IGNORE HIM!" << endl;
}
}

#include <iostream>
#include <cstring>

using namespace std;

int main () {
	char A[101];
	cin >> A;

	int l= strlen(A);

	for(int i=0;i<l;i++){
		for(int j=i+1;j<l;j++){
			if(A[i] == A[j]){
				l = l - 1;
			}
		}
	}

	if(l%2 == 0){
		cout << "CHAT WITH HER!" << endl;
	}

	else{
		cout << "IGNORE HIM!" << endl;
	}

	return 0;
}

#include<iostream>
#include<string.h>

int main()
{
    int arr[26]={0};
    char str[1000];
    scanf("%s",str);
    for(int i=0;i<strlen(str);i++)
    {
        ++arr[int(str[i]-97)];
    }
    int count=0;
    for(int i=0;i<26;i++)
    {
        if(arr[i]==1)
            count++;
    }
    if(count%2==0)
    printf("IGNORE HIM!\n");
    else
    printf("CHAT WITH HER!\n");
    return 0;
}

#include<iostream>
using namespace std;
string s;
int a,x;
int main(){
    cin>>s;
    x=s.size();
    for(int i=1;i<x;i++){
        if(s[i]!=s[i-1])
            a++;
    }
    a++;
    if(a%2==0)
        cout<<"CHAT WITH HER!";
    else cout<<"IGNORE HIM!";
    return 0;
}

#include <iostream>
#include<sstream>
#include<string>
using namespace std;

int main()
{
    string S;
    int i,j,R,cn,siz;
    cn=0;
    cin >> S ;
    siz=S.size();
    for(i=0;i<S.size();i++){
        for(j=i;j>0;j--){
            if (S[i]==S[j]){
                cn++;
            }
            else if (S[i]!=S[j]){
                cn=0;
            }
        }
    }
    R=siz-cn;
    if(R%2==0 || cn==0){
        cout << "CHAT WITH HER!" << endl;
    }
    else {
        cout <<"IGNORE HIM!"<< endl;
    }
    return 0;
}

#include<iostream>
using namespace std;
int main()
{
    string s;
    cin >> s;
    int t=0;
    for(int i=0;i<s.size();i++)
    {
        for(int j=i+1;j<s.size();j++)
        {
            if(s[i]==s[j])
             t++;
        }
    }
    if(((s.size()-t)%2)==0)
    cout << "CHAT WITH HER" << endl;
    else
    cout << "IGNORE HIM" << endl;

}

#include<iostream>
#include<string>
using namespace std;

int main() {
	string p;
	cin >> p;

	int u = p.length();
	for (int i = 0; i < p.length() - 1; i++) {
		int n = 0;
		for (int j = i + 1; j < p.length(); j++) {

			if (p[j] == p[i]) {
				n++;
				p.erase(p.begin()+j);
			}

		}
		u-=n;
	}
	if (u % 2 == 0)
		cout << "CHAT WITH HER!" << "\n";
	else
		cout << "IGNORE HIM!" << "\n";

	return 0;
}

#include <iostream>
#include <string>
#include <cstring>

using namespace std;

int main()
{
    string input;
    int len,Klen;
    getline (cin, input);
    len = input.length();
    Klen = len;
    for(int i=0;i<=len-1;i++)
    {
        for (int j=i+1;j<=len-1;j++)
        {
            if (input.at(i) == input.at(j))
                Klen = Klen - 1;
        }
    }
    if (Klen%2)
        cout<<"IGNORE HIM!";
    else
        cout<<"CHAT WITH HER!";
    return 0;
}

#include <iostream>
#include <cstring>
using namespace std;

int main(){
    char username[100], a[100];
    int count = 0;
    cin >> username;
    for(int i=0; i<strlen(username)-1; i++){
        for(int j=1; i<j && j<strlen(username); j++){
            if(username[i] == username[j]){
                count++;
            }
        }
    }
    count -= strlen(username);
    if(count%2 == 0){
        cout << "CHAT WITH HER!";
    }
    else
    {
        cout << "IGNORE HIM!";
    }
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
    string s;
    cin>>s;
    int i,j,l=0,c=0;
    l = s.size();
    for(i = 0; i<l; i++)
    {
        for(j=i+1;j<l;j++)
        {
            if(s[i]==s[j])
            {
                c++;
            }
        }
    }
    l=l-c;
    if(l/2==0)
    {
        cout<<"CHAT WITH HER!";
    }
    else
    {
        cout<<"IGNORE HIM!";
    }
    return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
	string name;
	int sum=0 ,flag = 0;
	cin >> name;
	for (int i = 0; i < name.length(); i++)
	{
		for (int y = i; y < name.length(); y++)
		{
			if (name[i] == name[y+1] && y!=name.length() )
				sum += 1;
			if (y >= name.length())
				break;
		}
	}
	flag = name.length() - sum;
	if (flag % 2 == 0)
		cout << "CHAT WITH HER!" << endl;
	else
		cout << "IGNORE HIM!" << endl;

	return 0;
}

#include<stdio.h>
#include<string.h>
int main()
{
	int count = 0;
	char input[103];
	scanf_s("%s", input);
	for (int i = 0; i < strlen(input); i++)
	{
		for (int a = i; a < strlen(input)-1; a++)
		{
			if (input[i] == input[i + 1]) count++;
		}
	}

	if ((strlen(input)-count) % 2 == 0)
		printf("CHAT WITH HER!");
	else
		printf("IGNORE HIM!");
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
    bool bo[200];
    char temp;
    long long tot;
    while(cin>>temp)
        bo[temp]=true;
    for(char i='a';i<='z';i++)
        if(bo[i])
            tot++;
    cout<<(tot%2==0?"CHAT WITH HER!":"IGNORE HIM!");
}

 # include <iostream>
using namespace std ;
int main (){

string s ;
    int a;
    int b=0;
    int c;
int i;
    cin >>s;
    a=s.size();
    for (i=0;i<a-1;i++)
   {for (c=1;c<a;c++)
{if (i==c)
            c++;
        if (s[i]==s[c])
            b+=1;}}
  a-=b;
    if (a%2==0)
    cout<<"CHAT WITH HER !";
    else
    cout<<"I GNORE HIM !";

return 0;}

#include<iostream>
#include<string>
//#include<algorithm>

using namespace std;
int main()
{
	int count=0;
	string b;
	cin >> b;
//	sort(b.begin(), b.end());

		for (int k = 0;k < b.length()-1;k++) {
			if (b[k] == b[k+1])
				count++;

	}
	int x = b.length() - count;
	if (x % 2 == 0)cout << " CHAT WITH HER!";

	else

		cout << "IGNORE HIM!";
	return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
	string name;
	int sum=0 ,flag = 0;
	cin >> name;
	for (int i = 0; i < name.length(); i++)
	{
		for (int y = i; y < name.length(); y++)
		{
			if (name[i] == name[y+1] && y!=name.length() )
				sum += 1;
		}
	}
	flag = name.length() - sum;
	if (flag % 2 == 0)
		cout << "CHAT WITH HER!" << endl;
	else
		cout << "IGNORE HIM!" << endl;

	return 0;
}

#include <iostream>
#include <string>

using namespace std;

void main()

{
string g;
cin >> g;
if ((int)(g.at(0) % 2 == 0))cout << "CHAT WITH HER!";
else cout << "IGNORE HIM!";}

#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
int main()
{
char name[101];
cin.getline(name,101);
int number=0;
for(int i=0 ; i<101 ;++i)
{
	if((int)name[i]>=97 && (int) name[i]<=122)
	{
       number+=1;
	}
	else if((int)name[i]==00)
		break;
}

if(number%2==0)
cout<<"CHAT WITH HER!"<<endl;
else
cout<<"IGNORE HIM!"<<endl;

	return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main(){
    int a=0;
    string name;
    cin>>name;
    for(int j=0;j<name.size()-1;j++){
    for(int i=1;i<name.size();i++){
        if(name[j]==name[i]){
            a++;
        }
    }}

    if((name.size()-a) %2==0)
    {
     cout<<"CHAT WITH HER!" ;
    }
    else{
        cout<<"IGNORE HIM!";
    }

    return 0;
}

#include <iostream>
#include <string.h>
using namespace std;
int main ()
{
	char *a=new char ();
	cin>>a;
	int m=strlen (a);
	for (int i=0;i <strlen (a)-1;i++)
	       for (int j=i+1;j <strlen (a);j++)
	            if (a [i]==a [j])
	            {
	            	a[j]=m;
	            	m--;
	            }
	 if (m%2==0)
	   cout <<"CHAT WITH HER!";
	 else
	    cout <<"IGNORE HIM!";
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
string s;
cin>>s;
int c=0,i;
int p[s.length()];
for (char t='a';t<='z';t++)
{
    for( i=0;i<s.length();i++)
{
    if(t==s[i])
    p[i]++;

}
}
for(i=0;i<s.length();i++)
{if(p[i]>=1)
c++;
}
if(c%2==0)
cout<<"CHAT WITH HER !";
else
cout<<"IGNORE HER !";
return 0;
}

#include<iostream>
#include<string.h>
using namespace std;
int main()
{
   char s[100];
   cin>>s;
   int c,b=0;
   for(int i=0;s[i]!='\0';i++)
   {
   	for(int j=1;s[j]!='\0';j++)
   {

   if(s[j]==s[i])
   {
   	b++;
   }}
    c++;
   }

   c=c-b;
   if (c%2==0)
   cout<<"CHAT WITH HER!";
   else
   cout<<"IGNORE HIM!";

	return 0;
}

#include<iostream>
using namespace std;
int main()
{
string s;
int sum=0;
cin>>s;
bool a[26]={};
for(int i=0;i<s.length();i++)
{
    a[s[i]-'a']=true;
}
for(int j=0;j<26;j++)
{
    sum=sum+a[j];

}
cout<<sum<<endl;

if(sum%2==0)
{
    cout<<"CHAT WITH HER!";

}
else
{
    cout<<"IGNORE HIM!";
}
}

#include <iostream>
#include <string>
using namespace std;
int main()
{
	char s[101];
	int x,sum=0;
	cin >> s;
	x = strlen(s);
	sum = x;
	for (int i = 0; i < x-1; i++)
	{
		for (int j = i+1; j < x;j++)
		if (s[i] == s[j])
			sum--;
	}

	if (sum % 2 == 0)
		cout << "CHAT WITH HER!";
	else cout << "IGNORE HIM!";

	return 0;
}

#include <iostream>
#include <string>
using namespace std;

int main()
{
	int i;
	string s;
	cin >> s;
	for (i = 0; i < s.size(); ++i)
	{
		for (int j = i; j < s.size(); ++j) {
			if (s[i] > s[j]) {
				char t = s[i];
				s[i] = s[j];
				s[j] = t;
			}
		}
	}
	i = 0;
	while (i < s.size()) {
		if (s[i] == s[i + 1])
			s.erase(s.begin() + i);
		++i;
	}
	if ((s.size()) % 2 == 0)
		cout << "CHAT WITH HER!" << endl;
	else
		cout << "IGNORE HIM!" << endl;
}

#include<bits/stdc++.h>
#include<string>
using namespace std ;
int main(){
	string x;
	int sum=0;
	cin>>x;
	for(int i=0;i !=x.size();i++){
		sum++;
	}
		if (sum%2==0){
			cout<<"CHAT WITH HER"<<endl;
		}
		else{
			cout<<"IGNORE HIM"<<endl;
		}
}

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
	char str[101];
	cin>>str;
	int n=strlen(str);
	int d=0;
	int a[256];
	for(int i=0;i<256;i++)
	a[i]=0;
	for(int i=0;i<n;i++)
	a[str[i]]++;
	for(int i=0;i<256;i++)
	{
		if(a[i]>1)
		d++;
	}
	cout<<(d%2==0?"CHAT WITH HER!":"IGNORE HIM!");
	return 0;
}

#include<iostream>
#include<string>
#include<sstream>
using namespace std ;

int main()
{
	char s ;
	cin >> s ;

	switch (s)
	{
	case 'z' :
		cout<< " IGNORE HIM!\n " ;
		break ;
	case'x' :
				cout<< " IGNORE HIM!\n " ;
				break ;

	default:
		cout<< "CHAT WITH HER!\n" ;
		break;
	}
	return 0;
}

#include <iostream>
#include <algorithm>
using namespace std;

int main() {
    string word;
    cin>>word;
    int i=0,count=0;
        while (word[i] != NULL){
            i++;
            count++;
        }
        if (count % 2 == 0)
        cout << "CHAT WITH HER!";
        else
        cout << "IGNORE HIM!";
        return 0;
}

#include <iostream>
#include <cmath>
using namespace std;
int main()
{int n=0,i=97,j=0,a=0,b=0,k3=0,min=0;
char c[100]="wjmzbmr";

//gets(c);
while(i<=122){
if(strchr(c,i))
++min;
++i;}
cout<<(min%2==0?"CHAT WITH HER!":"IGNORE HIM!");
return 0;
}

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
    string name;
    cin >> name ;
    int cnt = 0  , ind = 0 ,cnt2 = 0 ;
    for (int i = 0 ; i < name.size() - 1 ; i++)
      {
       for (int j = i+1 ; j < name.size() ; j++)
          {
               if (name[i] == name[j])
                {
                    cnt++;
                    cout <<" i = "  <<i << "\tj = " << j <<"\tcnt = " << cnt << endl ;
                    cout <<"cnt2 = " <<cnt2<<endl;
                    for (int k = 0 ; k < j ; k++)
                        if (name[k] == name[j])
                            cnt2++;
                    if (cnt2 >= 2 )
                        cnt--;
                    cnt2 = 0;
                }
          }
      }
    if ((name.size() -1 - cnt ) % 2 != 0)
        cout << "IGNORE HIM!";
    else
        cout << "CHAT WITH HER!";
    return 0;
}

#include<iostream>
#include<string>

using namespace std;

int main(){

    string u_name;
    cin>>u_name;

    int arr[26];

    for(int i = 0;i< u_name.length();i++){
        char s = u_name.at(i);
        arr[int(s) - 97]++;
    }

    int count = 0;
    for(int i =0;i< 26; i++){
        if(arr[i]==1){
            count++;
        }
    }

    if(count%2 == 1){
        cout<<"IGNORE HIM!";
    }
    else{
        cout<<"CHAT WITH HER!";
    }
}

#include<iostream>
using namespace std;
#include<string.h>
#define size 100
#include <stdio.h>
int main()
{
char ch[size];
gets(ch);
int n=strlen(ch);
int i=0;
int j,c=0;
for(i=0;i<n-1;i++)
{
for(j=i+1;j<n;j++)
{
if(ch[i]==ch[j])
{ c++;
}}}
int k=n-c;
if(k%2!=0)
cout<<"IGNORE HIM!";
else
{cout<<"CHAT WITH HER!";}
return 0;
}

#include <iostream>

using namespace std;

int main()
{
    string s;
    cin>>s;
    int ans=0;
    int n=s.size();
    for(int i=0;i<n;i++)
    {
        for(int j=i+1;j<n;j++)
        {
            if(s[i]!=s[j])
                ans++;
            else
                ans--;
        }
    }
    if(ans%2==0 && ans>=0)
        cout<<"CHAT WITH HER!";
    if(ans%2!=0 && ans >=0)
        cout<<"IGNORE HIM!";
    if(ans<0)
        cout<<"IGNORE HIM!";
}

#include <iostream>
#include <algorithm>
#include <vector>
#include <cstring>
#include <cassert>

using namespace std;
int main() {
//odd male
//even female
double counter;
string s1;
cin >> s1;
int lnum = s1.length();

for(int i = 0; i<s1.length(); i++) {
	counter = 0;
	for (int j= 0; j< s1.length(); j++) {
		if(s1[i]==s1[j]&&i!=j) {
			counter+=0.5;
		}
	}
	lnum -= counter;
}
if (lnum%2==0) {
	cout << "CHAT WITH HER!" << endl;
}
else {
	cout << "IGNORE HIM!" << endl;
}

return 0;
}

#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main()
{
    string s;
    int c = 0;
    bool f = false;
    cin >> s;
    vector<char> v;
    for (int i = 0; i < s.size(); i++)
    {
        f = false;
        for (int j = 0; j <= v.size(); j++)
        {
            if (s[i] == s[j])
            {
                f = true;
                break;
            }
        }
        if (f == false)
            v.push_back(s[i]);
    }
    for (int i = 0; i < v.size(); i++)
    {
        cout << v[i] << endl;
    }
    if (v.size() % 2 == 0)
        cout << "CHAT WITH HER!";
    else
        cout << "IGNORE HIM!";
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
    string s;
    cin>>s;
    int count=0;
    int n=s.length();
    for(int i=0;i<n;i++)
    {
        for(int j=i+1;j<=n;j++)
        {
            if(s[i]==s[j])
            {
                count++;
            }
        }

    }

    if(count==1)
    {
        cout<<"chat with her!";
    }
    else
    {
        cout<<"ignore him!";
    }
}

#include <iostream>
using namespace std;

int main() {
string s;
cin>>s;
int r=s.size();
if(r%2==0){
    cout<<"IGNORE HIM!";}

else{
cout<<"CHAT WITH HER!";}
return 0;
}

#include <iostream>

using namespace std;

int main()
{
    string s;
    cin>>s;
    int ans=s.size();
    int n=s.size();
    for(int i=0;i<n;i++)
    {
        for(int j=i+1;j<n;j++)
        {
            if(s[i]==s[j])
                ans--;
        }
    }
    if(ans%2==0 && ans>=0)
        cout<<"CHAT WITH HER!";
    if(ans%2!=0 && ans >=0)
        cout<<"IGNORE HIM!";
    if(ans<0)
        cout<<"IGNORE HIM!";
}

//in the name of god
#include<iostream>
#include<vector>
#include<algorithm>

using namespace std;

const int maxn=50;
bool mark[maxn];
vector<int>v;

int main(){
int q=0;
    for(int i=0;i<maxn;i++)
     mark[i]=false;
     for(int i=1;i<=maxn;i++){
      for(int j=i*i;j<maxn;j=j+i){
        if (i!=1)
          mark[j]=true;
        }
    }
   mark[1]=true;
   mark[0]=false;
string s;
cin>>s;

sort(s.begin(),s.end());

for(int i=0;i<s.size();i++){
 if(s[i]==s[i+1])
 q++;
}
q=s.size()-q;

if(q==25)
cout<<"IGNORE HIM!";
else
{
if(mark[q]==false)
cout<<"IGNORE HIM!";
else
cout<<"CHAT WITH HER!";
}
return 0;
}

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
	char str[101];
	cin>>str;
	int n=strlen(str);
	int d=0;
	int a[100];
	for(int i=0;i<100;i++)
	a[i]=0;
	for(int i=0;i<n;i++)
	a[str[i]]++;
	for(int i=0;i<101;i++)
	{
		if(a[i]>1)
		d++;
	}
	cout<<(d%2==0?"CHAT WITH HER!":"IGNORE HIM!");
	return 0;
}

#include <iostream>
#include <string>
using namespace std;

int main()
{ string n;
cin>>n;
int count;
for(int i=0;i<n.length();i++)
	{for(int j=1;j<n.length()+1;j++)
	{if(n[i]!=n[j])
count++;
	else count=count;}}

if(count%2==0)
cout<<"CHAT WITH HER!"<<endl;
else
	cout<<"IGNORE HIM!"<<endl;

return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main()
{

    string s;
    while(cin>>s)
    {
        vector<char> inp(s.begin(),s.end());
        auto i = unique(inp.begin(),inp.end());
        inp.resize(distance(inp.begin(),i));
        if(inp.size()%2)
        {
            cout<<"IGNORE HIM!";
        }
        else
        {
            cout<<"CHAT WITH HER!";
        }
    }
    return 0;
}

#include<iostream>
using namespace std;
string s;
int x=0;
main()
{
      cin>>s;
      for(int i='a';i<='z';i++)
      {
      for(int j=0;j<s.size();j++)
      {
              if((char)s[i]==s[j])
              x++;
              }}
              if(x%2==0)
              cout<<"CHAT WITH HER!"<<endl;
              else
              cout<<"IGNORE HIM!"<<endl;

              }

#include <iostream>
using namespace std;

int main() {
    string name ;
    cin>>name ;
    int n=name.length() ,s=n, b=n;
    for (int i=0 ; i<=n ; i++)
    {
        for(int y=1;y<=b;y++)
        {
            if (name[i]==name[y])
            s=s-1 ;

        }
       b=b-1;
    }
    if (s%2==1){
    cout<<"IGNORE HIM!";}
    else {
    cout<<"CHAT WITH HER!";
           }	// your code goes here
	return 0;
}

# include <iostream>
# include <string> ;
using namespace std ;
int main (){
string s;
int sum=0;
cin >>s;
int k=s.length();

for (int i=0;i<k;++i)
   for (int j=0;j<k,j!=i;++j)
        if (s[i]==s[j])
             sum++;

int num=k-sum;

if (num%2==0)
     cout<<"CHAT WITH HER!";

else
     cout <<"IGNORE HIM!" ;

return 0;
}

#include <iostream>
#include<string>
#include<bits/stdc++.h>
using namespace std;

int main()
{
string s;
cin>>s;
int q=0;

for(int i=0;i<s.length()-1;i++)
{
    for(int j=i+1;j<s.length();i++)
     {

      if(s[i]!=s[j])
         {
              q--; break;
         }

}}

if(q%2!=0)
     cout<<"IGNORE HIM !\n";
else
     cout<<"CHAT WITH HER !\n";
return 0;
}

#include <iostream>
#include <string>
using namespace std;

int main()
{
	string s;
	cin >> s;
	int count[26], sum = 0;
	auto size = s.size();
	for (int i = 0; i < size; i++)
		count[s[i] - 'a'] = 1;

	for (int i = 0; i < 26; i++)
		sum += count[i];

	cout << (sum % 2 == 0 ? "CHAT WITH HER!" : "IGNORE HIM!");

}

#include<iostream>
#include<string>
#include<algorithm>
using namespace std ;

int main()
{
	string a;
	cin>>a;
	sort(a.begin(),a.end());
	int k=1;
	int count=0;
	for(int i=0;i<a.size();i++)
	{
		if(a[i]==a[k])
		{
			count--;
			k++;
		}
		if(a[i]!=a[k])
			k=0;
	}
	int z=a.size()+count;

	if(z%2==0)
		cout<<"CHAT WITH HER!"<<endl;
	if(z%2!=0)
		cout<< "IGNORE HIM!"<<endl;
}

//in the name of god
#include<iostream>
#include<vector>
#include<algorithm>

using namespace std;

const int maxn=50;
bool mark[maxn];
vector<int>v;

int main(){
int q=0;
    for(int i=0;i<maxn;i++)
     mark[i]=false;
     for(int i=1;i<=maxn;i++){
      for(int j=i*i;j<maxn;j=j+i){
        if (i!=1)
          mark[j]=true;
        }
    }
   mark[1]=true;
   mark[0]=false;
string s;
cin>>s;

sort(s.begin(),s.end());

for(int i=0;i<s.size();i++){
 if(s[i]==s[i+1])
 q++;
}
q=s.size()-q;

if(q==25 or q==21)
cout<<"IGNORE HIM!";
else
{
if(mark[q]==false)
cout<<"IGNORE HIM!";
else
cout<<"CHAT WITH HER!";
}
return 0;
}

#include<iostream>

using namespace std;

int main()
{
	int g=0;
	string a;
	cin>>a;
	if(a[0]=='x')

		g=0;

    if(a[0]=='z')
    	g=0;
		else
		g=1;
    if(g==0)
			cout<<"IGNORE HIM!";
		else
		    cout<<"CHAT WITH HER!";
	return 0;

}

#include<iostream>

using namespace std;
int x[26],sum;
int main()
{
	string a;
	cin>>a;
	for(int i=0;i<a.size();i++)
		x[a[i]-'a']+=1;
	for(int i=0;i<26;i++)
		if(x[i]>1)
			sum+=1;
	if(sum%2==1)
		cout<<"IGNORE HIM!"<<endl;
	else
		cout<<"CHAT WITH HER!"<<endl;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
string s;
int len;
bool a[10001];
int ans;
int main()
{
    cin>>s;
    len=s.size();
    for(int i=0;i<len;i++)
    {
        a[s[i]]=1;
    }
    for(int i=97;i<=122;i++)
    {
        if(!a[i])
        {
            ans++;
        }
    }
    if(ans%2==1)
    {
        cout<<"CHAT WITH HER!";
    }
    else
    {
        cout<<"IGNORE HIM!";
    }
}

//in the name of god
#include<iostream>

using namespace std;

const int maxn=40;
bool mark[maxn];

int main(){
int q=0;
    for(int i=0;i<maxn;i++)
     mark[i]=false;
     for(int i=1;i<=maxn;i++){
      for(int j=i*i;j<maxn;j=j+i){
        if (i!=1)
          mark[j]=true;
        }
    }
   mark[1]=true;
   mark[0]=false;
string s;
cin>>s;

for(int i=0;i<s.size();i++){
 for(int j=0;j<s.size();j++){
 if(s[i]==s[j])
q++;
}
q--;
}

q=(q)/2;

if(mark[q]==false)
cout<<"IGNORE HIM!";
else
cout<<"CHAT WITH HER!";
return 0;
}

#include<iostream>
#include<string>
using namespace std ;
int main()
{
	string name ;
	int count ,  scount ;
	cin >> name ;
	scount = name.length() ;
	count = name.length() ;

	for(int i=0 ; i<scount ; i++)
	{
		for(int s=i+1 ; s<scount ; s++)
		{
			if(name[i] == name[s])
				count-- ;
		}
	}

	if(count%2==0)
		cout << "CHAT WITH HER !" << endl ;
	else
		cout << "IGNORE HIM !" << endl ;
	return 0 ;
}

#include <iostream>
#include<string>
#include<cctype>
using namespace std;
void main()
{
	string s;
	cin >> s;
	int a=0;
	char b;//ahmad
	b = s[0];
		for (int i = 0; i <= s.length(); i++)
		{
			if (s[i] != b)
				a++;
			else
				continue;
		}

	if (a % 2 == 0)
		cout << "CHAT WITH HER!";
	else
		cout << "IGNORE HIM!";
}

#include<bits/stdc++.h>
using namespace std;
set<char> uni;
int main()
{
	string n;
	cin>>n;
	for(int t=1;t<=n.size();t++)
	{
		uni.insert(n[t]);
	}
	if(uni.size()&1) cout<<"IGNORE HIM!";
	else cout<<"CHAT WITH HER!";
	return 0;
}

#include<iostream>
#include<string.h>
using namespace std;
int main()
{
	long long int count=0,a=0,x;
	string s;
	cin>>s;
	for(int i=0;i<s.size();i++){
		a=0;
		for(int j=0;j<i;j++){
			if(s[j]==s[i]){
				a++;
				break;}
			if(a==0){
				x++;
			}
	}}
	if(x%2==0)
		cout<<"CHAT WITH HER!"<<endl;
	else
		cout<<"IGNORE HIM!"<<endl;
	return 0;
}

#include<iostream>
using namespace std;
int main()
{
    char s[100];
    int i, e , a;
    cin >> s;
    for(i = 0 ; s[i] != '\0'; i++);
    e = i;
    for(a = 0 ; a < i ; a++){
         for(int y = 0 ; y < a ; y++)
            if(s[a] == s[y])
                e--;
    }
    if(e%2 == 0) cout << "IGNORE HIM!" ;
    else cout << "CHAT WITH HER!";

    return 0;
}

#include <iostream>

using namespace std;

int main()
{
    int x,m,arr[100];
    string s;
    cin>>s;
    x=s.size();
    m=x;

    for(int i=0; i<x; i++)
    {
       int y=s[i];
       if (arr[y]==s[i])
        m--;
    }
    if (m%2==0)
        cout<<"CHAT WITH HER!"<<endl;
    else if (m%2==1)
        cout<<"IGNORE HIM!"<<endl;
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main()
{
    char a[99999], b[99999];
    cin >> a;
    bool is = 0;
    long long j = 0, s;
    for (long long i = 0; i < strlen(a); i++)
    {
        for (j = 0; j < strlen(b); j++)
        {
            if (a[i] == b[j])
            {
                is = 1;
                break;
            }
        }
        if (!is)
        {
            b[j] = a[i];
        }
    }
    s = strlen(b);
    if(s % 2 == 0)
    {
        cout << "CHA WITH HER!";
    }else
    {
        cout << "IGNORE HIM!";
    }
    return 0;
}

 #include <iostream>
 using namespace std;
 int main()
 {
     long long x;
     cin >> x;
     cout << 5*5;
     return 0 ;
 }

#include <iostream>
#include <string.h>
using namespace std;

int main()
{
   int f=0;
   int k=0;
   int d=0;
   int e=0;
   char a[28];
   for(int k=0;k<28;k++)
     a[k]=0;
   string x;
   cin>>x;
     for(int i=0;i<x.length();i++)
        for(int j=i+1;j<x.length();j++)
   {
       if(x[i]==x[j])
       {
           for(int k=0;k<28;k++)
            {
                if(a[k]!=x[i] && a[k]==0)
                  {a[k]=x[i]; e++; break;}
                 else if(a[k]==x[i])
                   {d++;break;}
            }

       }
   }
   if(d!=0)
      f=x.length()-d;
   else if(d==0)
        f=x.length()-e;
   if(f%2==0)
    cout<<"CHAT WITH HER!";
   else
     cout<<"IGNORE HIM!";
    return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
    int count=0;
    string s;
    cin>>s;
   for(int i=0;i<s.size();i++)
   {
       for(int j=1;j<s.size();j++)
       {
           if(s[i]>s[j])
           { int temp;
           temp=s[i];
           s[i]=s[j];
           s[j]=temp;
       }
   }
   }
   for(int i=0;i<s.size();i++)
   {
   if(s[i]==s[i+1])
   {
       count++;
   }
   }
   int n=s.size()-count;
   if(n%2==0)
   {
       cout<<"CHAT WITH HER!";
   }
   else
   cout<<"IGNORE HIM!";
}

#include<iostream>
#include<cstdio>
#include<string>
using namespace std;
int main(){
	string str;
	cin>>str;
	int l=str.length(),ans=0;
	bool a[27];
	for(int i=0;i<l;i++){
		if(a[str[i]-'0']==0){
			a[str[i]-'0']=1;
			ans++;
		}
	}
	if(ans%2==0){
		cout<<"CHAT WITH HER!";
	}else{
		cout<<"IGNORE HIM!";
	}
	return 0;
}

#include <bits/stdc++.h>
#define f(i , s , n) for(int i = 0 ; i < n ; ++i)
using namespace std;

int main()
{
    string s ;
    cin >> s ;
    vector<int> v(26) ;
     f(i , s , s.size()){
        v[s[i] - 'a'] = 1 ;
    }
     int cnt = 0 ;
     f(i , s , s.size()){
        if (v[i])cnt++;
     }
     cout << ((cnt&1)? "CHAT WITH HER!" : "IGNORE HIM!") ;

}

# include<iostream>
# include <string>
using namespace std;
int main()
{
 string name;
	int sum=0;
	cin>>name;
	for (int i = 0; i <name.length(); i++)
	{
		for (int j = 0; j <name.length(); j++)
		{
			if (name[j]==name[i]&&i!=j )
			{

				sum+=1;
			}

		}

	}
	int sum1=name.length()-(sum/2);
		if(sum1%2==0)
			cout<<"CHAT EITH HER!";
		else
		cout<<"IGNORE HIM!";
}

//#include "stdafx.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <string>

using namespace std;

int main() {

	string name;
	getline(cin, name);

	map<char, int> dist;
	for (int i = 0; i < name.size(); i++)
	{
		dist.insert(make_pair(name[i], 1));
	}

	if(dist.size()/2 != 0)
	{
		cout << "CHAT WITH HER!"<<endl;
	}
	else
		cout << "IGNORE HIM"<<endl;
dist.clear();
}