// editor3
#include <iostream>
using namespace std;
int main()
{
    int len,wid;
    cin>>len;
    cin>>wid;
    try{
        if(len <=0 || wid<=0 )
        {
            throw"Invalid input";
        }
        int area = len*wid;
        cout<<area;
    }
    catch(const char*a)
    {
        cout<<msg;
    }
    return 0;
}