#include<iostream>
using namespace std;
int main()
{
    int length,width;
    cin>>length;
    cin>>width;
    if(length<=0 || width<=0)
    {
        cout<<"Invalid input"<<endl;
    }
    else
    {
        int area = length*width;
        cout<<area<<endl;
    }
    retun 0;
}