HDU 1002

java大数类应用。

import java.math.BigInteger;
import java.util.Scanner;
public class Main{
	public static void main(String args[]) {
		Scanner cin=new Scanner(System.in);
		while(cin.hasNext())
		{
			int n=cin.nextInt();
			int h=1;
			while(n--!=0)
			{
				if(h!=1)
				{
					System.out.println();
				}
				BigInteger a=cin.nextBigInteger();
				BigInteger b=cin.nextBigInteger();
				BigInteger ans=a.add(b);
				System.out.println("Case "+h+":");
				System.out.println(a+" + "+b+" = "+ans);
				h++;
			}
		}
	}
}