from itertools import product


def nand(a, b):
    if a == 0 and b == 0: return 1
    return a ^ b


for a, b, c in product([0, 1], repeat=3):
    x = nand(nand(a, b), c)
    y = nand(a, nand(b, c))
    if x != y:
        print(a, b, c)
        break