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