#!/usr/bin/env python3

# Gabriel Antonio Videtta (2021)

import random


def estimate_pi(runs=1_000_000):
    total = 0
    circle_points = 0

    for _ in range(runs):
        if random.random() ** 2 + random.random() ** 2 <= 1:
            circle_points += 1

        total += 1

    return 4 * circle_points / total


print(estimate_pi())