# Author: Mehedi Afzal Farazi
# Problem: Print 1 to 10 and then 9 to 1:

# Code:
for i in range(1,20):
    if i >= 1 and i <= 10:
        print(i)
    if i >= 11 and i <= 19:
        print(20-i)

# 	******************* # 

# Sample Output:
	# 1
	# 2
	# 3
	# 4
	# 5
	# 6
	# 7
	# 8 
	# 9 
	# 10
	# 9
	# 8
	# 7
	# 6
	# 5
	# 4
	# 3
	# 2
	# 1