#include<bits/stdc++.h>
using namespace std;
int main()
{
    char a,b,c;
    cin>>a>>b>>c;
    int s=(a-'0')*(c-'0');
    cout<<s;
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int a,b;
    char x;
    cin>>a;
    cin>>x;
    cin>>b;
    cout<<a*b;
	return 0;
}