from cs1graphics import *

paper = Canvas(500,500)

tl = Square(250, Point(125,125))
tl.setFillColor('green')
tl.setBorderWidth(0)
paper.add(tl)

tr = Square(250, Point(375,125))
tr.setFillColor('blue')
tr.setBorderWidth(0)
paper.add(tr)

bl = Square(250, Point(125,375))
bl.setFillColor('red')
bl.setBorderWidth(0)
paper.add(bl)

br = Square(250, Point(375,375))
br.setFillColor('yellow')
br.setBorderWidth(0)
paper.add(br)