大数乘法java版

 1 import java.util.*;
 2 import java.math.*;
 3 
 4 public class NumMul{
 5     public static void main(String args[]){
 6         Scanner cin = new Scanner(System.in);
 7         BigInteger a, b;
 8         while(cin.hasNext()){
 9             a = cin.nextBigInteger();
10             b = cin.nextBigInteger();
11             System.out.println(a.multiply(b));
12         }
13     }
14 }