#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b;
    long long e;
    char c,d;
    cin>>a>>c>>b>>d;
    e=a*b;
    cout<<e<<endl; 
 
    return 0;
}
/**************************************************************
	Problem: 1129
	User: hongjiaming
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/