#include <iostream>
using namespace std;

class unary{

    int x, y;

public:

    unary(int a = 0, int b = 0) {
        x = a;
        y = b;
    }
    void showData() {
        cout << x << "\n" << y;
    }
    void operator ++() {
        x++;
        y++;
    }
};



int main()
{
    unary a(1,2);
    ++a;
    a.showData();

    return 0;
}