/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class Main {

	public static void main(String[] args) throws Exception{
		File inFile=new File("C-small-attempt1.in");
		File outFile=new File(inFile.getName().substring(0,inFile.getName().length()-3)+".out");
		BufferedReader in=new BufferedReader(new FileReader(inFile));
		//BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
		int cases=Integer.parseInt(in.readLine());
		Recycler r[]=new Recycler[cases];
		ExecutorService executor=Executors.newFixedThreadPool(10);
		for(int i=0;i<cases;i++){
			String temp[]=in.readLine().split(" ");
			int first=Integer.parseInt(temp[0]);
			int second=Integer.parseInt(temp[1]);
			r[i]=new Recycler(first,second);
			executor.execute(r[i]);
		}
		executor.shutdown();
		while(!executor.isTerminated());
		DataOutputStream out=new DataOutputStream(new FileOutputStream(outFile));
		for(int i=0;i<cases;i++){
			out.writeBytes("Case #"+(i+1)+": "+r[i].getCount()+"\n");
			System.out.println("Case #"+(i+1)+": "+r[i].getCount());
		}
	}
}
