# list1 = []
# for i in range(1000):
#     # i%3 will produce zero if i is divisable by 3 - zero is seen as false that is why
#     # it is not(i%3)
#     if not(i%3) or not(i%5):
#         list1.append(i)
# sum = 0
# for i in list1:
#     sum += i
# print(sum)

for i in range(20,0,-1):
    print(i)