from turtle import *

#def square(side_length):
#   forward(side_length)
# right(90)
#  forward(side_length)
#  right(90)
#  forward(side_length)
#  right(90)
#   forward(side_length)
#  right(90)




def square(side_length):
    scones = [ 20, 50, 27,8 ]
    for score in scones: 
        forward(side_length)
        right(90)
sizes = [20, 40, 60, 80, 100]
for size in sizes:
    square(size)   
input()