from turtle import *
from math import *
def kvadrat(a):
    for k in range(4):
        fd(a); rt(90)
def pitagora(a,n):
    if n>=0:
        kvadrat(a);
        fd(a); lt(45);
        pitagora(a/sqrt(2),n-1)
        rt(90); fd(a/sqrt(2));
        pitagora(a/sqrt(2),n-1)
        rt (90); fd(a/sqrt(2));
        bk(a/sqrt(2)); lt(90);
        bk(a/sqrt(2)); lt(45); bk(a)
        
a = textinput('Duljina stranice','a = ')
a = int(a)
n = textinput('Dubina rekurzije','n = ')
n = int(n)
lt(90); title('Pitagorino stablo'); ht();
pitagora(a,n)