POJ 2389 Bull Math JAVA .

题目地址：http://poj.org/problem?id=2389

用 JAVA 显得太水一点了.. 

import java.util.*;
import java.math.*;
import java.text.*;
import java.io.*;public class Main
{public static void main(String[] args) {Scanner cin = new Scanner(new BufferedInputStream(System.in));BigInteger a=cin.nextBigInteger(),b=cin.nextBigInteger();System.out.println(a.multiply(b));}
}