poj 1503 大数...java真强大...

import java.math.*;
import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args)
    {
        Scanner cin = new Scanner(new BufferedInputStream(System.in));
        BigInteger sum = BigInteger.valueOf(0);
        BigInteger curr;
        while ( cin.hasNext() )
        {
            curr = cin.nextBigInteger();
            if ( curr.compareTo(BigInteger.valueOf(0)) == 0 )
                break;
            sum = sum.add(curr);
        }
        System.out.println(sum);
    }
}