
# 10번 반복
for i in range(0, 10, 1):
	print(i)

for i in range(10):
	print(i)

# 20번 반복
for i in range(20):
	print(i)

# 30번 반복
# for i in range(30):
# for i in range(0, 30, 1):
for i in range(0, 30):
	print(i)