#include <iostream>
using namespace std;

enum class Color { red, green = 1, blue };

ostream& operator<<(ostream& ostr, const Color& c) {
    ostr << (int)c;
    return ostr;
}

int main() {
Color c = Color::blue;

if( c == Color::blue )
cout << Color::green << "\n";



	return 0;
}