def AND (x1, x2):
    # ...
    pass

def OR (x1,x2):
    # ...
    pass

def NAND (x1,x2):
    # ...
    pass

def NOR (x1, x2):
    # ...
    pass

def XOR (x1, x2):
    # ...
    pass

def NEGATION (x1):
    # ...
    pass



negative = False
positive = True

step1 = NAND(negative, negative)
step2 = XOR (step1, negative)
step3 = AND (step2, positive)
step4 = NOR (step3, negative)
step5 = OR (step4, positive)
step6 = XOR (step5, NEGATION(step2))
step7 = XOR (NEGATION (step6), AND (step3, step4))

print(step7)