#include <iostream>
  
int main()
{
    int x = 0, y = 72, z = 0;
    std::cout << "Before\n\nx: " << x << " y: " << y;
    std::cout << " z: " << z << "\n\n";
    z = x = y + 13;
    std::cout << "After\n\nx: " << x << " y: " << y;
    std::cout << " z: " << z << "\n";
    return 0;
}