a = 0
b = 1
c = 2

# 1. and: 与: 都真才真
print((a < b) and (c > b))
print(a > b and c > b)


# 2. or：或 : 一真则真，都假才假
print(a < b or c > b)
print(a > b or c > b)


# 3. not： 非: 取反
print(not False)

print(not c > b)




