from turtle import *
a = Turtle()
print('Введите кол-во вершин и длинну')
n,length = map(int,input().split())
def paint(n,length):
if n%2 != 0:
for i in range(n):
a.forward(length)
angle = n//2 * 360/n
a.left(angle)
paint(n,length)
a.screen.mainloop()