//simple calculator
#include <iostream>
using namespace std;

int main() {
    // instructions
    cout << "INSTRUCTIONS: put your 2 numbers, and either type multiplication, addition, division, or subtraction for the results." << std::endl;
    // variables
    int s;
    int z;
    string e;

    // input
    cin >> s;
    cin >> z;
    cin >> e;

    // answer
    if (e == "multiplication") {
        cout << s * z << std::endl;
    }
    else if (e == "addition") {
        cout << s + +z << std::endl;
    }
    else if (e == "division") {
        cout << s / z << std::endl;
    }
    else if (e == "subtraction") {
        cout << s - z << std::endl;
    }

    system("pause");
    return 0;
}