from random import random

def monte_carlo(n):
  S=0
  for k in range(n):
    x = random()
    y = random()
    if x*x+y*y <= 1:
      S=S+1
  return S/n


#Execution de la fonction
print(monte_carlo(100))
print(monte_carlo(10000))
print(monte_carlo(1000000))