#make a yellow square inside a red one
#the first parameter gives the length of the side of the red square
#the second gives the length of the side of the yellow square
#the returned value is the picture
def yellow_in_red(rsize,ysize):
  p=makeEmptyPicture(rsize,rsize)
  for px in getPixels(p):
    setColor(px,red)
  for x in range(rsize/2-ysize/2,rsize/2+ysize/2):
    for y in range(rsize/2-ysize/2,rsize/2+ysize/2):
      px=getPixel(p,x,y)
      setColor(px,yellow)
  return p
  
  
def yellowred():  
  redsize=input("Enter size of red square")
  yellowsize=input("Enter size of yellow square")
  show(yellow_in_red(redsize,yellowsize))