20221023

# a = bool(int(input()))
# print(not a)

# a, b = input().split()
# print(bool(int(a))and bool(int(b)))

# a, b = input().split()
# print(bool(int(a))or bool(int(b)))

# a, b = input().split()
# c = bool(int(a))
# d = bool(int(b))
# print((c and (not d)) or ((not c) and d))

# a, b = input().split()
# a = bool(int(a))
# b = bool(int(b))
# print(a==b)

# a, b = input().split()
# c = bool(int(a))
# d = bool(int(b))
# print(not(c or d))