#include <iostream>
using namespace std;
 
 
class Frequency
{
public:
	void Print() const { cout << hertz << "Hz\n"; }
 
	explicit constexpr Frequency(unsigned int h) : hertz(h) {}
private:
	unsigned int hertz;
};
constexpr Frequency operator"" _Hz(unsigned long long hz)
{
	return Frequency{hz};
}
constexpr Frequency operator"" _kHz(long double khz)
{
	return Frequency{khz * 1000};
}
 
int main()
{
	Frequency(44100_Hz).Print();
	Frequency(44.1_kHz).Print();
	return 0;
}

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