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