tsk 4

from itertools import product


def f(x, y, w, z):
    return (x and z) or ((w <= x) == (z <= y))


print(f'x y w z F')
a = product([0, 1], repeat=4)
for x,y,w,z in a:
    if not f(x,y,w,z):
        print(x, y, w, z, 0)