13.11

# # def is_bigger(x):
# #     return x > 7
# numbers = [1, 8, 11, 15, 6]
# a = lambda x: x > 7
# print(list(filter(a, numbers)))
# # for number in filter(is_bigger, numbers):
# #     print(number)

# words = ["tetatet", "sasa", "kekok", "kok", "sosa"]
# print(list(map(str.upper, words)))

# print(sum([i ** 2 for i in range(50 * 1000 * 1000)]))
# print(sum(map(lambda x: x ** 2, range(50 * 1000 * 1000))))
# words = ["мир", "и", "война"]
#
# print(sorted(words, key=lambda word: len(word),reverse=True))

# Task 1
# def arithmetic_operator(symv):
#     if symv == "+":
#         return lambda x, y: x + y
#     if symv == "-":
#         return lambda x, y: x - y
#     if symv == "*":
#         return lambda x, y: x * y
#     if symv == "/":
#         return lambda x, y: x / y
#
#
# oper = arithmetic_operator("-")
# print(oper(15, 17))

# Task 2.1
# numbers = [1, 2, 11, 15, 6]
# a = lambda x: x < 5
# print(list(filter(a, numbers)))
# Task 2.2
# numbers = [1, 2, 11, 15, 6]
# b = [x for x in numbers if x < 5]
# print(b)

# Task 3.1
# numbers = [1, 2, 11, 15, 6]
# print(list(map(lambda x: x / 2, numbers)))
# Task 3.2
# numbers = [1, 2, 11, 15, 6]
# b = [i / 2 for i in numbers]
# print(b)

# Task 4
# b = [x ** 2 for x in range(1000) if x % 9 == 0]
# print(sum(b))

# Task 5
# print(*sorted(input().split(), key=str.lower))