HDU-1002-A + B Problem II [大數運算 | java語言]

題目連結：http://acm.hdu.edu.cn/showproblem.php?pid=1002

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

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