1 import java.math.BigInteger;
 2 import java.util.Scanner;
 3 
 4 
 5 public class sss {
 6 
 7     /**
 8      * @param args
 9      */
10     public static void main(String[] args) {
11         // TODO Auto-generated method stub
12         Scanner in=new Scanner(System.in);
13         BigInteger  a,b;
14         a=in.nextBigInteger();
15         b=in.nextBigInteger();
16         System.out.println(a.multiply(b));
17     }
18 }