poj 1503 && hdu 1047 大数相加

import java.io.*;
import java.util.*;
import java.math.*;
public class Main{
	public static void main(String[] args){
		Scanner cin = new Scanner(System.in);
				boolean flag = false;
				BigInteger a = BigInteger.valueOf(0);
				while(cin.hasNextBigInteger())
				{
					BigInteger key = cin.nextBigInteger();
					BigInteger b = BigInteger.valueOf(0);
					if(key.compareTo(b)==0){
						flag = true;
					}
					if(flag == true)break;
					a=a.add(key);
				}
				System.out.println(a);
	}
}