#include <iostream>
using namespace std;

int main()
{
    int a, b;
    cin >> a >> b;
    char c;
    cin >> c;
    if(c == '+') {
        cout << a + b << endl;
    }
    else if(c == '-') {
        cout << a - b << endl;
    }
    else if(c == '*') {
        cout << a * b << endl;
    }
    else if(c == '/') {
        cout << a / b << endl;
    }
    return 0;
}