A + B Problem II

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

代码：

import java.io.BufferedInputStream;

import java.math.BigInteger;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		// TODO 自动生成的方法存根

		Scanner str = new Scanner(System.in);

		int T;

		T=str.nextInt();

		int i=1;

		for(i=1;i<=T;i++)

		{

			BigInteger a=str.nextBigInteger();

			BigInteger b=str.nextBigInteger();

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

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

			if(i<T)

			{

			System.out.println("");

			}

		}

	}

}