#include <iostream>
#include <fstream>
#include <algorithm>

using namespace std;

int main()
{
    for (int x = 0; x < 2; x++)
        for (int y = 0; y < 2; y++)
            for (int z = 0; z < 2; z++)
                for (int w = 0; w < 2; w++)
                {
                    if ((!bool(y) || bool(x)) || (!bool(z) && bool(w)) = (w = x))
                }

    return 0;
}