package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

package com.google.codejam;

public class RecycledNumbers {
	public int solve(int[] n){
		int res = 0;
		int len = getLen(n[0]);
		int[] sh = new int[len-1];
		for (int i = n[0]; i <= n[1]; i++) {
			for (int j = 1; j < len; j++) {
				int ni = shift(i, j, len);
				sh[j-1] = ni; 
				if(ni > i && ni <= n[1]) {
					boolean dup = false;
					for (int k = 0; k < j-1; k++) {
						if(sh[k] == ni) dup = true;
					}
					if(!dup) res++; 
				}
			}
		}
		return res;
	}

	private int shift(int i, int j, int len) {
		int ex = i % ((int)Math.pow(10, j));
		int div = i / (int)Math.pow(10, j);
		return ex * (int)Math.pow(10, len-j) + div;
	}

	private int getLen(int n) {
		int c = 0;
		while(n > 0){
			n /= 10;
			c++;
		}
		return c;
	}
}
