#include <iostream>
using namespace std;

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

    char c;
    cin >> c;

    if(c == '+') {
        cout << a + b << endl;
    }
    if(c == '-') {
        cout << a - b << endl;
    }
    if(c == '*') {
        cout << a * b << endl;
    }
    if(c == '/') {
        cout << a / b << endl;
    }


    return 0;
}