name = gets.strip
registered_char = []
counter = 0

name.each_char do |char|
  next if registered_char.include?(char)

  registered_char.push(char)
  counter += 1
end

if counter.odd?
  puts 'IGNORE HIM!'
else
  puts 'CHAT WITH HER!'
end

$><<["IGNORE HIM!","CHAT WITH HER!"][gets.chars.uniq.size%2]

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts gets.chomp.chars.uniq.length%2==0?'CHAT WITH HER!':'IGNORE HIM!'

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts gets.chomp.chars.uniq.size%2==0?'CHAT WITH HER!':'IGNORE HIM!'

puts gets.split('').sort.uniq.size % 2==1 ? "CHAT WITH HER!" : "IGNORE HIM!"

puts gets.split(//).uniq.size.odd? ? 'CHAT WITH HER!' : 'IGNORE HIM!'

puts ['IGNORE HIM!','CHAT WITH HER!'][gets.chars.to_a.uniq.size%2]

puts (gets.strip.split('').uniq.size.odd?)?'IGNORE HIM!':'CHAT WITH HER!'

puts ['IGNORE HIM!','CHAT WITH HER!'][gets.split('').uniq.size%2]

if gets.chomp.split("").uniq.size.odd?
 puts "IGNORE HIM!"
else
 puts "CHAT WITH HER!"
end

# http://codeforces.com/problemset/problem/236/A

username = gets.chomp

if username.chars.to_a.uniq.length % 2 == 0
  puts "CHAT WITH HER!"
else
  puts "IGNORE HIM!"
end

puts ["CHAT WITH HER!", "IGNORE HIM!"][gets.chomp.chars.to_a.uniq{|x| x}.length.odd? ? 1 : 0]

puts gets.chomp.split(//).uniq.count.even? ? 'CHAT WITH HER!' : 'IGNORE HIM!'

string = gets.chomp.split("")

arr = []
for i in (0..string.size-1)
	if arr.include?(string[i]) == false
		arr << string[i]
	end
end

if arr.count % 2 == 0
	print "CHAT WITH HER!"
else
	print "IGNORE HIM!"
end

if gets.chomp.split(//).uniq.count.odd?
  puts "IGNORE HIM!"
else
  puts "CHAT WITH HER!"
end

name = gets.strip()
if name.size() <= 100
    array_of_characters = name.chars.uniq
	if array_of_characters.size % 2 == 0
		puts "CHAT WITH HER!"
	else
		puts "IGNORE HIM!"
	end
end

puts gets.chomp.chars.uniq.size%2!=0 ? "IGNORE HIM!" : "CHAT WITH HER!"

puts gets.chomp.chars.uniq.size.even? ? 'CHAT WITH HER!': 'IGNORE HIM!'

x = gets
h = {}
x.split("").each { |e|
    h[e]=1
}
if !h.keys.count.odd?
    puts "IGNORE HIM!"
  else
    puts "CHAT WITH HER!"
end

puts gets.chomp.split("").uniq.count.even? ?  'CHAT WITH HER!' : 'IGNORE HIM!'

def BoyOrGirl(str)
  puts str.chars.uniq.length % 2 == 0 ? "CHAT WITH HER!" : "IGNORE HIM!"
end

str = gets.chomp
BoyOrGirl(str)

puts (gets.split(//).uniq.count.even?) ? "IGNORE HIM!" : "CHAT WITH HER!"

puts ["IGNORE HIM!","CHAT WITH HER!"][gets.chars.uniq.size[0]]

input = gets
puts input.split(//).uniq.count % 2 == 0 ? 'IGNORE HIM!' : 'CHAT WITH HER!'

#!/usr/bin/ruby
puts ['IGNORE HIM!','CHAT WITH HER!'][gets.chars.uniq.size%2]

$><<["IGNORE HIM!","CHAT WITH HER!"][gets.chars.uniq.size%2]

inp = gets.chomp
if inp.split('').uniq.length.odd?
  puts 'IGNORE HIM!'
else
  puts 'CHAT WITH HER!'
end

puts gets.chomp.split("").uniq.length.even? ? "CHAT WITH HER!" : "IGNORE HIM!"

user_name = gets.chomp
i = 0
char_arr = []

while i < user_name.length do
    if char_arr.index(user_name.split('')[i]) == nil then
	char_arr.push(user_name.split('')[i])
    end
    i+=1
end
if char_arr.length % 2 == 0 then
    print 'CHAT WITH HER!'
elsif
    print 'IGNORE HIM!'
end

#!/usr/bin/ruby

str = gets.chomp
cnt = str.each_char.to_a.uniq.size
if cnt.even?
    puts "CHAT WITH HER!"
else
    puts "IGNORE HIM!"
end

puts ['CHAT WITH HER!','IGNORE HIM!'][gets.strip.split('').uniq.join('').length%2]

#$stdin=File.open('input.txt')
#$stdout=File.open('output.txt', 'w')
s=gets.to_s
a=Array.new
for i in 1..s.size-1
	a<<s[i-1]
end
if a.uniq.size%2==0 then
	puts "CHAT WITH HER!"
	else
	puts "IGNORE HIM!"
end

puts gets.chomp.chars.uniq.size % 2 == 0 ? "CHAT WITH HER!" : "IGNORE HIM!"

printf(gets.chomp.each_char.to_a.uniq.size.odd? ? 'IGNORE HIM!' : 'CHAT WITH HER!')

puts gets.split('').uniq.size.odd? ? 'CHAT WITH HER!' : 'IGNORE HIM!'

if gets.chars.to_a.uniq.size % 2 == 0 then puts 'IGNORE HIM!'
else puts 'CHAT WITH HER!'
end

puts gets.split(//).uniq.size.odd? ? 'CHAT WITH HER!' : 'IGNORE HIM!'

username = gets.strip
L = username.length
check = Array.new(26, false)
for i in 0...L
  check[username[i].ord-97] = true
end
count = 0
for i in 0...26
  count += 1 if check[i]
end
if count%2 == 1
  print "IGNORE HIM!"
else
  print "CHAT WITH HER!"
end

printf (gets.chomp.each_char.to_a.uniq.size % 2 == 0) ? 'CHAT WITH HER!' : 'IGNORE HIM!'

w = gets.chomp
if w.scan(/./).uniq.size % 2 == 0
  puts "CHAT WITH HER!"
else
  puts "IGNORE HIM!"
end

def tram ()
  n = gets.chomp
  n = n.split("")
  n = n.uniq
  if n.length % 2 == 0
    print "CHAT WITH HER!"
  else
    print "IGNORE HIM!"
  end
end

tram

name = gets.chomp
amount = Array.new(26, 0)
name.split("").each { |char| amount[char.ord - 97] += 1 }
cnt = 0
amount.each { |tmp| cnt += 1 if tmp > 0 }
if cnt.even?
	puts "CHAT WITH HER!"
else
	puts "IGNORE HIM!"
end

$><<["IGNORE HIM!","CHAT WITH HER!"][gets.chars.uniq.size%2]

if (gets.chomp.split(//).uniq.size % 2) == 1
print "IGNORE HIM!\n"
else
print "CHAT WITH HER!\n"
end

s = gets.split(//).uniq
puts (s.length % 2 == 1) ? "CHAT WITH HER!"  : "IGNORE HIM!"

if gets.strip.split('').to_a.uniq.size % 2 == 0
  puts "CHAT WITH HER!"
else
  puts "IGNORE HIM!"
end

if gets.chomp.split('').uniq.size%2 == 0
  puts "CHAT WITH HER!"
else
  puts "IGNORE HIM!"
end

puts (gets[0..-2].chars.to_a.uniq.count % 2 == 0 ? "CHAT WITH HER!" : "IGNORE HIM!")

name = gets.chomp

puts name.chars.sort.uniq.size.even? ? 'CHAT WITH HER!' : 'IGNORE HIM!'

# Codeforces Round #146
# Problem A -- Boy or Girl
puts gets.split(//).uniq.size.odd? ? "CHAT WITH HER!" : "IGNORE HIM!"

str = gets.chomp
if str.chars.uniq.size.even?
    puts "CHAT WITH HER!"
else
    puts "IGNORE HIM!"
end

u = $stdin.readline.scan(/./).uniq

if u.count % 2 == 1
    puts "IGNORE HIM!"
else
    puts "CHAT WITH HER!"
end

if gets.chomp.split(//).uniq.size % 2 == 0 then puts "CHAT WITH HER!" else puts "IGNORE HIM!" end

hashed = Hash.new(0)
inp = gets.chomp.split("").each { |item| hashed[item] += 1 }
if hashed.size % 2 == 0
 puts "CHAT WITH HER!"
else
  puts "IGNORE HIM!"
end

require 'set'
name = gets.split(//)
s = Set.new
name.each do |char|
  s.add(char)
end
if s.size.even?
  puts "IGNORE HIM!"
else
  puts "CHAT WITH HER!"
end

puts gets.chomp.split("").uniq.join.length.%(2).to_s.include?("1")?"IGNORE HIM!":"CHAT WITH HER!"

puts (gets.chomp.split('').uniq.length.odd?) ? "IGNORE HIM!" : "CHAT WITH HER!"

puts STDIN.read.strip.split(//).uniq.length % 2 == 0 ?  "CHAT WITH HER!" : "IGNORE HIM!"

s = gets.chomp.chars
puts s.uniq.count.odd? ? "IGNORE HIM!" : "CHAT WITH HER!"

s = gets.strip.split("").uniq
ans = s.length.odd?
puts ans ? "IGNORE HIM!" : "CHAT WITH HER!"

$><<["IGNORE HIM!","CHAT WITH HER!"][gets.chars.uniq.size%2]

  x = gets.chomp
  hash = Hash.new
  x.each_char do |c|
    hash[c] = 0 if hash[c] == nil
    hash[c] += 1
  end
  puts "CHAT WITH HER!" if hash.count % 2 == 0
  puts "IGNORE HIM!" if hash.count % 2 != 0

username = gets.chomp
puts (username.split(//).uniq.length % 2 == 1)? "IGNORE HIM!" : "CHAT WITH HER!"

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts(gets.chars.uniq.size%2==0?'CHAT WITH HER':'IGNORE HIM')

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts gets.chars.uniq.size%2?'IGNORE HIM':'CHAT WITH HER'

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts(gets.chars.uniq.length%2==0?"CHAT WITH HER":"IGNORE HIM")

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts gets.chars.uniq.size%2==0?'CHAT WITH HER':'IGNORE HIM'

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts(gets.chomp.chars.uniq.length%2==0?'CHAT WITH HER':'IGNORE HIM')

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts gets.chomp.split(//).uniq.length%2==0?'CHAT WITH HER':'IGNORE HIM'

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts gets.split(//).uniq.length%2==0?'CHAT WITH HER':'IGNORE HIM'

#rextester.com:2.3.1--codeforces.com:2.0.0p645
puts(gets.chars.uniq.length%2==0?'CHAT WITH HER':'IGNORE HIM')

require "set"

set = Set.new(gets.chars)
set.each {|x| puts x}
if set.size() % 2 == 0
  puts "CHAT WITH HER!"
else
  puts "IGNORE HIM!"
end

require "set"

set = Set.new(gets.chop.chars)
set.each {|x| puts x}
if set.size() % 2 == 0
  puts "CHAT WITH HER!"
else
  puts "IGNORE HIM!"
end

require "set"

s = gets
set = Set.new
s.each_char {|c| set << c}
if s.size() % 2 == 0
  puts "CHAT WITH HER!"
else
  puts "IGNORE HIM!"
end

uname = gets.chomp
username = uname.split("")

count = uname.length.to_i
username.each do |n|
	count = count - username.count(n) + 1
	if username.count(n) != 1
		i = username.index(n)
		while i < uname.length.to_i
			if n == username[i+1]
				username.delete_at(i+1)
			end
			i += 1
		end
	end
end

if username.size%2 == 0
	puts "CHAT WITH HER!"
else
	puts "IGNORE HIM!"
end

uname = gets.chomp
username = uname.split("")

count = uname.length.to_i
username.each do |n|
	count = count - username.count(n) + 1
	if username.count(n) > 1
		i = username.index(n)
		while i < uname.length.to_i - 1
			if n == username[i+1]
				username.delete_at(i+1)
			end
			i += 1
		end
	end
end
puts username.size
if username.size%2 == 0
	puts "CHAT WITH HER!"
else
	puts "IGNORE HIM!"
end

uname = gets.chomp
username = uname.split("")

i = 0
count = uname.length.to_i
username.each do |n|
	count = count - username.count(n) + 1
	if username.count(n) != 1
		i = username.index(n)
		while i < uname.length.to_i
			if n == username[i]
				username.delete_at(i)
			end
			i += 1
		end
	end
end

if count%2 == 0
	puts "CHAT WITH HER!"
else
	puts "IGNORE HIM!"
end

uname = gets.chomp
username = uname.split("")

count = uname.length.to_i
username.each do |n|
	count = count - username.count(n) + 1
	if username.count(n) > 1
		i = username.index(n)
		while i < uname.length.to_i - 1
			if n == username[i+1]
				username.delete_at(i+1)
			end
			i += 1
		end
	end
end
if username.size%2 == 0
	puts "CHAT WITH HER!"
else
	puts "IGNORE HIM!"
end

uname = gets.chomp
username = uname.split("")

i = 0
count = uname.length.to_i
username.each do |n|
	count = count - username.count(n) + 1
	if username.count(n) != 1
		i = username.index(n)
		while i+1 < uname.length.to_i
			if n == username[i+1]
				username.delete_at(i+1)
			end
			i += 1
		end
	end
end

if count%2 == 0
	puts "CHAT WITH HER!"
else
	puts "IGNORE HIM!"
end

x = gets
h = {}
x.split("").each { |e|
    h[e]=1
}
if h.keys.count.odd?
    puts "IGNORE HIM!"
  else
    puts "CHAT WITH HER!"
end

# http://codeforces.com/problemset/problem/236/A

chars = gets.chomp
already = {}
dups = 0
chars.each_char do |c|
  if already[c] == true
    dups = dups + 1
  else
    already[c] = true
  end
end

uniq = chars.length - dups

if uniq % 2 == 0
  p 'CHAT WITH HER!'
else
  p 'IGNORE HIM!'
end

inp = gets.chomp
if inp.length.odd?
  puts 'CHAT WITH HER!'
else
  puts 'IGNORE HIM!'
end

inp = gets.chomp
if inp.length.odd?
  p 'CHAT WITH HER!'
else
  p 'IGNORE HIM!'
end

inp = gets.chomp
if inp.split('').uniq.length.odd?
  puts 'CHAT WITH HER!'
else
  puts 'IGNORE HIM!'
end

inp = gets.chomp
if inp.length.odd?
  p 'IGNORE HIM!'
else
  p 'CHAT WITH HER!'
end

puts ['IGNORE HIM!','CHAT WITH HER!'][gets.strip.length%2]

h = {}
gets.split('').each { |c| h[c] = 1 }
puts h.keys.count.even? ? 'CHAT WITH HER!' : 'IGNORE HIM!'

puts gets.split('').uniq.size.even? ? 'CHAT WITH HER!' : 'IGNORE HIM!'

a=gets.chomp
0.upto(a.length-1) do |i|
(i+1).upto(a.length-1) do|j|
if a[i] ==a [j]
a=a[0..j-1]+a[j+1..a.length-1]
end
end
end
if a.length%2==0
puts "CHAT WITH HER!"
else
puts "IGNORE HIM!"
end

p(gets.chomp.each_char.to_a.uniq.size % 2 == 0 ? 'CHAT WITH HER!' : 'IGNORE HIM!')

output = (gets.chomp.each_char.to_a.uniq.size % 2 == 0) ? 'CHAT WITH HER!' : 'IGNORE HIM!'
p output

p(gets.chomp.each_char.to_a.uniq.size % 2 == 0 ? "CHAT WITH HER!" : "IGNORE HIM!")

n = gets.to_s
ar = []
ar = n.split("").map(&:to_s)
j = ar.uniq.count

if j%2 == 0
        puts "CHAT WITH HER!"
else
        puts "IGNORE HIM!"
end
puts j

n = gets.to_s
ar = []
ar = n.split("").map(&:to_s)
j = ar.uniq.count-1

if j%2 == 0
        puts "CHAT WITH HER!"
else
        puts "IGNORE HIM!"
end
puts j

n = gets.to_s
ar = []
ar = n.split("").map(&:to_s)
j = ar.uniq.count - 1

if j%2 == 0
        puts "CHAT WITH HER!"
else
        puts "IGNORE HIM!"
end
puts j

s = gets.split(//).uniq!
puts (s.length % 2 == 1) ? "CHAT WITH HER!"  : "CHAT WITH HIM!"

# while (s=gets.chomp()) != "42" do puts s end

s=gets.chomp()
c= s.split(//).uniq
# s.to_a
# c=b.uniq

# a=s.uniq
if c.length%2==0
    puts "IGNORE HIM!"
else
    puts "CHAT WITH HER!"
end

# while (s=gets.chomp()) != "42" do puts s end

s=gets.chomp()
c= s.split(//).uniq
# s.to_a
# c=b.uniq

# a=s.uniq
puts c.length
if c.length%2==0
     puts "CHAT WITH HER!"
else

    puts "IGNORE HIM!"
end

name = gets.strip()
if name.size() <= 100
	if name.size() % 2 == 0
		puts "CHAR WITH HER!"
	else
		puts "IGNORE HIM!"
	end
end

name = gets.strip()
if name.size() <= 100
    array_of_characters = name.chars.uniq
	if array_of_characters.size % 2 == 0
		puts "CHAR WITH HER!"
	else
		puts "IGNORE HIM!"
	end
end

puts ["CHAT WITH HER!","IGNORE HIM!"][gets.chars.uniq.size[0]]

puts ["CHAT WITH HER!","IGNORE HIM!"]["ab".chars.uniq.size[0]]

puts gets.chomp.length.even? ? "CHAT WITH HER!" : "IGNORE HIM"

#$stdin=File.open('input.txt')
#$stdout=File.open('output.txt', 'w')
s=gets.to_s
if s.size%2==0 then
puts "CHAT WITH HER!"
else
puts "IGNORE HIM!"
end

#$stdin=File.open('input.txt')
#$stdout=File.open('output.txt', 'w')
s=gets.to_s
if s.size%2!=0 then
puts "CHAT WITH HER!"
else
puts "IGNORE HIM!"
end

p(gets.chomp.split.uniq.size.odd? ? 'IGNORE HIM!' : 'CHAT WITH HER!')

str = gets.chomp.each_char
p(str.take(str.count).size.odd? ? 'IGNORE HIM!' : 'CHAT WITH HER!')

p(gets.chomp.each_char.to_a.uniq.size.odd? ? 'IGNORE HIM!' : 'CHAT WITH HER!')


n = gets.to_i
s = gets.strip
d = Array.new(n + 1) { [Float::INFINITY] * 2 }
d[0][0] = 0
n.times do |i|
  2.times do |j|
    d[i + 1][j] = [d[i + 1][j], d[i][j] + 1].min
  end
  if i + i <= n && s[0, i] == s[i, i]
    d[i + i][1] = [d[i + i][1], d[i][0] + 1].min
  end
end
p d[-1].min

n = gets.to_i
s = gets.chomp
max = 0
for i in 0..n / 2
	max = s[0..i] == s[i + 1..i * 2 + 1] ? i : max
end
puts n - max

n = gets.to_i - 1
s = gets.chomp
max = 0
for i in 0..n / 2
	max = s[i+1..n+1][s[0..i]] != nil ? i : max
end
puts n - max + 1

n = gets.to_i - 1
s = gets.chomp
max = 0
for i in 0..n / 2
	max = s[s[0..i] * 2] != nil ? i : max
end
puts n - max + 1