#include <iostream>
using namespace std;

int main(){
    int c, b;
    cin >> c >> b;

    char znak;
    cin >> znak;

    if(znak == '+') {
        cout << c + b << endl;
    }
    else if(znak == '-') {
        cout << c - b << endl;
    }
    else if(znak == '*') {
        cout << c * b << endl;
    }
    else if(znak == '/') {
        cout << c / b << endl;
    }
    return 0;
}