#!/usr/bin/env python

import argparse
import hashlib

def main(args):
    seq = 0
    password = ""


    while True:
        char_input = "{}{}".format(args.input, seq)
        m = hashlib.md5()
        m.update(char_input.encode('utf-8'))
        h = m.hexdigest()
        if h.startswith('00000'):
            password = "{}{}".format(password, h[5])
            print("id: {}, hash: {}".format(seq, h))
        if len(password) == 8:
            break;
        seq += 1
    print(password)

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='AdventOfCode 2016 Day 01')
    parser.add_argument('--input', '-i', action='store',  required=True, help='input file')
    args = parser.parse_args()

    main(args)