HDOJ 1002 java

import java.math.BigInteger;

import java.util.ArrayList;

import java.util.Scanner;







public class Main {



    public static void main(String[] args) {

        

            Scanner scanner= new Scanner(System.in);

            int n=scanner.nextInt();

            for(int i=1;i<=n;i++)

            {

                BigInteger a=scanner.nextBigInteger();

                BigInteger b=scanner.nextBigInteger();

                BigInteger c=a.add(b);

                System.out.println("Case "+i+":");

                System.out.println(a+" + "+b+" = "+c);

                if(i!=n)

                System.out.println();

            }

                    scanner.close();

            

    }



}