hdu1002 A + B Problem II(大数题)

I have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.

Input

The first line of the input contains an integer T(1<=T<=20) which means the number of test cases. Then T lines follow, each line consists of two positive integers, A and B. Notice that the integers are very large, that means you should not process them by using 32-bit integer. You may assume the length of each integer will not exceed 1000.

Output

For each test case, you should output two lines. The first line is "Case #:", # means the number of the test case. The second line is the an equation "A + B = Sum", Sum means the result of A + B. Note there are some spaces int the equation. Output a blank line between two test cases.

Sample Input

2
1 2
112233445566778899 998877665544332211

Sample Output

Case 1:
1 + 2 = 3

Case 2:
112233445566778899 + 998877665544332211 = 1111111111111111110

import java.util.*;
import java.math.*;

public class Main {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner in = new Scanner(System.in);
        int T = in.nextInt();
        BigInteger big1,big2;
        for(int i=1 ; i<=T ; i++){
        	big1 = in.nextBigInteger();
        	big2 = in.nextBigInteger();
        	if(i!=1) System.out.println();
        	System.out.println("Case "+i+":");
        	System.out.println(big1+" + "+big2+" = "+big1.add(big2));
		}
    }

}