#include <iostream>

using namespace std;

int main()
{
    int a = 0, b = 0;
    char c;
    cin >> a >> c >> b;
    /*
    if (c == '+')
        cout << a + b << '\n';
    if (c == '-')
        cout << a - b << '\n';
    if (c == '*')
        cout << a * b << '\n';
    if (c == '/')
        cout << a / b << '\n';
    */

    switch(c)
    {
        case '+':
            cout << a + b << '\n';
            break;
        case '-':
            cout << a - b << '\n';
            break;
        case '*':
            cout << a * b << '\n';
            break;
        case '/':
            cout << a / b << '\n';
            break;
        default:
            cout << "Неизвестный символ\n";
    }

    system("pause");
    return 0;
}