#include <iostream>
using namespace std;
int main() {
int n ,m;
char a[100];
cin>>n>>a>>m;
switch (a[0]){
case '+':
cout<<n+m;
break;
case '-':
cout<<n-m;
break;
case '*':
cout<<n*m;
break;
case '/':
cout<<n/m;
break;
}
return 0;
}