#include<bits/stdc++.h>
using namespace std;

int main() {
  int a,b; char x;
  cin>>a>>x>>b;
  cout<<a*b<<'\n';
  return 0;
}

#include<bits/stdc++.h>
using namespace std;

int main() {
  int a,b; char x;
  scanf("%d%c%d",&a,&x,&b);
  printf("%d\n",a*b);
  return 0;
}