#include <iostream>
int main() {
    int x{4};
    int old = x++;
    std::cout << old << " " << x << "\n";
    int current = ++x;
    std::cout << current << " " << x << "\n";
    int before = x--;
    std::cout << before << " " << x << "\n";
    int after = --x;
    std::cout << after << " " << x << "\n";
    x += 2;
    x -= 1;
    ++x;
    x--;
    std::cout << x << "\n";
    return 0;
}