// editor3
#include <iostream>
using namespace std;

int main(){
    int length, width;
    cin>>length;
    cin>>width;
    
    try{
        if(lkength<=0||width <=0){
            throw "Invalid input";
        }
        int area = length*width;
        cout<<area;
    }
    catch(const char*msg){
        cout<<a;
    }
    return 0;
}