#include<iostream>


int main()
{
    while (true) {
        char op;
        std::cout << "Enter equation to be performed --> ";
        std::cin >> op;
        if (op == 'N')
            break;
        std::cin.unget();
        int left_int, right_int, result;
        std::cin >> left_int >> op>> right_int;
        switch (op)
        {
          case '+':
            result = left_int + right_int;
            break;
          case '-':
            result = left_int - right_int;
            break;
          case '*':
            result = left_int * right_int;
            break;
          case '/':
            result = left_int / right_int;
            break;
          case '%':
            result = left_int % right_int;
            break;
          default:
            std::cout << "Unsuppoted operand: " << op;
            break;
        }
        std::cout << result << std::endl;
    }
}