#include <iostream>

using namespace std;

class Number {
private:
	int num; 
private:
	Number() { num = 0; }
	Number(int n) { num = n; } // 
	operator int() { return num; }
	Number operator++();
	Number operator++(int d);
	Number operator--();
	Number operator--(int d);
};

Number Number::operator++()
{
	num++;
	return *this;
}

Number Number::operator++(int d) {
	Number n = *this;
	num++;
	return n;
}

Number Number::operator --() {
	num--;
	return *this;
}

Number Number::operator --(int d) {
	Number n = *this;
	num--;
	return n;
}

int main() {
	Number n;
	int i = (int)n;
	cout << i << endl;
}