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 recyclednumbers.util;

import java.util.ArrayList;
import java.util.List;
import recyclednumbers.recycler.Recycler;

public class Main {

    public static void main(String[] args) {

        String inputFile = "small-data-input";
        String outputFile = "small-data-output";

        Recycler recycler = new Recycler();

        List<String> inputLines = IOUtil.readLines(inputFile);
        inputLines.remove(0); //Burn first line

        List<String> outputLines = new ArrayList<String>();
        for (String line : inputLines) {
            int first = Integer.parseInt(line.split(" ")[0]);
            int second = Integer.parseInt(line.split(" ")[1]);
            outputLines.add(recycler.countPairs(first, second) + "");
        }

        IOUtil.writeLines(outputFile, outputLines);


    }
}
