// editor3
import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        try{
        int l=sc.nextInt();
        int w=sc.nextInt();
        if(l<=0 || w<=0){
            Sstem.out.print("Invalid input");
        }
        System.out.print(l*w);
        }
        catch (Exception e){
            System.out.print("Invalid input");
        }
    }
}