hdu1002 A + B Problem II

Problem Description

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

JAVA做大数问题就是简洁啊！哈哈

import java.math.*;
import java.util.*;
public class Main {
	public static void main(String[] args){
		int n,i;
		Scanner cin =new Scanner(System.in);
		BigInteger a,b;
		n=cin.nextInt();
		for (i=1;i<=n;i++)
		{
			a=cin.nextBigInteger();
			b=cin.nextBigInteger();
			System.out.println("Case "+i+":");
			System.out.print(a+" + "+b+" = ");
			System.out.println(a.add(b));
			if(i!=n)
				System.out.println();
		}
	}		
}

好好学学acm中的JAVA。