import turtle
import random


def rule0(xold,yold,zold):
    x=0
    y=.2*yold
    z=0
    return (int(x),int(y),int(z))

def rule1(xold,yold,zold):
    x=0.85*xold
    y=.85*yold+.11*zold +70
    z=-.1*yold+0.85*zold
    return (int(x),int(y),int(z))

def rule2(xold,yold,zold):
    x=0.31*xold-0.41*yold
    y=0.1*xold+0.21*yold+21
    z=0.3*zold
    return (int(x),int(y),int(z))

def rule3(xold,yold,zold):
    x=-0.29*xold +0.4*yold
    y=0.1*xold+0.19*yold+56
    z=0.3*zold
    return (int(x),int(y),int(z))


turtle.speed("fastest")
turtle.up()

x=y=z=0

rules=[rule0,rule1,rule2,rule3]

for i in range(50000):
   r=random.randint(0,3)
   x,y,z = rules[r](x,y,z)
   turtle.goto(x-500,y-500)
   turtle.dot(1)


input("done")