#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: admin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/