#!/usr/bin/env python3

def naive_fuel(mass : int) -> int:
    return mass // 3 - 2

def calc_fuel(mass : int) -> int:
    fuel_mass = naive_fuel(mass)
    if fuel_mass < 0:
        return 0
    return fuel_mass + calc_fuel(fuel_mass)

def preproc(puzzle_input : str): 
    return list(map(int, puzzle_input.split()))

def partI(modules):
    return sum(map(naive_fuel, modules))

def partII(modules):
    return sum(map(calc_fuel,  modules))

from main import Tests
tests = Tests()
tests.add(1969, partI=654, partII=966)
tests.add(100756, partI=33583, partII=50346)