# 
# 7A
# windmill
g.norefresh();
import math


def percentage(x):
	g.paper(0)
    	g.line(0, 50, 100, 50)
      	g.line(50, 0, 50, 100)
        g.line(0, 25, 50, 25)
 	g.line(25, 0, 50, 0)
	g.pen(100)
	x = int(x/2)
	newx = int(x/2)
	for i in range((25-newx), 25):
		g.line(i, 25, i, 50)
	for i in range((50-newx), 50):
		g.line(i, 25, i, 50)
	for i in range(0, newx):
		g.line(i, 0, i, 25)
	for i in range(25, (25+newx)):
		g.line(i, 0, i, 25)
				      

        for i in range(0, x):
		g.line(50, i, 100, i)
	for i in range((100-x), 101):
		g.line(i, 50, i, 100)
	for i in range((100-x), 101):
		g.line(0, i, 50, i)
							 


while 1:
	percentage(25)
	g.refresh()
	g.pause(100)
	percentage(50)
	g.refresh()
	g.pause(100)
	percentage(75)
	g.refresh()
	g.pause(100)