#include <iostream>

class Limits {
public:
    static int maximum() {
        return 10;
    }
};

enum class State {
    ready,
    busy
};

int main() {
    std::cout << Limits::maximum() << '\n';
    State state{State::ready};
    if (state == State::ready) {
        std::cout << "ready" << '\n';
    }
    state = State::busy;
    if (state == State::busy) {
        std::cout << "busy" << '\n';
    }
    return 0;
}