#include <cstdint>
#include <iostream>

class RGBA
{
private:
    std::uint8_t m_red;
    std::uint8_t m_green;
    std::uint8_t m_blue;
    std::uint8_t m_alpha;
public:
    RGBA(std::uint8_t red = 0, std::uint8_t green = 0, std::uint8_t blue = 0, std::uint8_t alpha = 255) :
        m_red(red), m_green(green), m_blue(blue), m_alpha(alpha) {}

    void print()
    {
        std::cout << "r=" << static_cast<int>(m_red) <<
            " g=" << static_cast<int>(m_green) <<
            " b=" << static_cast<int>(m_blue) <<
            " a=" << static_cast<int>(m_alpha) << std::endl;
    }

};