# x = 10
#
# if x < 0:
#     print("negative")
# elif x == 0:
#     print("zero")
# elif x == 19:
#     print("10")
# elif x == 0:
#     print("zero")
# else:
#     print("positive")
#
#
# a = 5
# b = 10
#
# if a > 0:
#     print("a is positive")
#     if b > 0:
#         print("b is positive")
#

count = 0

while count < 5:
    print(count)
    count += 1