#include <iostream>
using namespace std;

enum class NumericType
{
    None                    = 0,

    PadWithZero             = 0x01,
    NegativeSign            = 0x02,
    PositiveSign            = 0x04,
    SpacePrefix             = 0x08
};

inline NumericType operator |(NumericType a, NumericType b)
{
    return static_cast<NumericType>(static_cast<int>(a) | static_cast<int>(b));
}

inline NumericType operator &(NumericType a, NumericType b)
{
    return static_cast<NumericType>(static_cast<int>(a) & static_cast<int>(b));
}

inline NumericType& operator |=(NumericType& a, NumericType b)
{
    return a= a |b;
}

int main() {
	// your code goes here
	NumericType a=NumericType::PadWithZero;
	a|=NumericType::NegativeSign;
	cout << static_cast<int>(a) ;
	return 0;
}