hdu 1002(java大数)

import java.math.BigInteger;
import java.util.Scanner;

public class Main
{
    public static void main(String args[]) 
    {
        Scanner reader = new Scanner(System.in);
        int t, cas;
        cas = 0;
        t = reader.nextInt();
        while ((t--) != 0)
        {
            BigInteger a, b, c;
            a = reader.nextBigInteger();
            b = reader.nextBigInteger();
            c = a.add(b);
            System.out.println("Case " + (++cas) + ":");
            System.out.println(a + " + " +  b + " = "  + c);
            if (t != 0)
            {
                System.out.println("");
            }
        }
    }
}