import java.util.*;

 import java.math.*;

 public class NumMul{

     public static void main(String args[]){

         Scanner cin = new Scanner(System.in);

         BigInteger a, b;

         while(cin.hasNext()){

             a = cin.nextBigInteger();

             b = cin.nextBigInteger();

             System.out.println(a.multiply(b));

         }

     }

 }