/*
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 * and open the template in the editor.
 */

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

package MyAllgoritmicLib;

public class SimpleNumbers {
	public static boolean[] masInt;

	public static void initSimpleInt(int n) { // âõîäíûå äàííûå
		masInt = new boolean[n + 1];
		for(int i=0; i<=n;i++){
			masInt[i] = true;
		}
		masInt[0] = masInt[1] = false; // åñëè êòî-òî áóäåò èñïîëüçîâàòü ýòè
		// çíà÷åíèÿ
		for (int i = 2; i <= n; ++i) {
			if (masInt[i]) {
				for (int j = i + i; j < n; j += i) {
					masInt[j] = false;
				}
			}
		}
	}

	public static void main(String[] args) {
		initSimpleInt(1000000);
		int col = 0;
		int max = 0;
		for (int i = 0; i < 1000000; i++) {
			if (masInt[i]) {
				col++;
				max = i;
			}
		}
		System.out.println(max);
		System.out.println(col);
	}
}
