#include<iostream>
using namespace std;
int main(){
    int n1, n2;
    char op;
    cin>>n1>>op>>n2;
    switch(op){
        case'+':cout<<n1+n2<<endl; break;
        case'-':cout<<n1-n2<<endl; break;
        case'*':cout<<n1*n2<<endl; break;
        case'/':cout<<n1/n2<<endl; break;
    }
}