#! /usr/bin/env python3

import pathlib
import sys


def row_to_int(string: str) -> int:
    return int(string.replace("F", "0").replace("B", "1"), 2)


def col_to_int(string: str) -> int:
    return int(string.replace("L", "0").replace("R", "1"), 2)


def parse(puzzle_input: str):
    """Parse input"""
    rows_and_cols = [
        (row_to_int(x[:7]), col_to_int(x[7:])) for x in puzzle_input.splitlines()
    ]
    return set([x[0] * 8 + x[1] for x in rows_and_cols])


def part1(data):
    """Solve part 1"""
    return max(data)


def part2(data):
    """Solve part 2"""
    for row in range(128):
        for col in range(8):
            potentialID = row * 8 + col
            if potentialID not in data:
                if (potentialID + 1 in data) and (potentialID - 1 in data):
                    return potentialID


def solve(puzzle_input):
    """Solve the puzzle for the given input"""
    data = parse(puzzle_input)
    solution1 = part1(data)
    solution2 = part2(data)

    return solution1, solution2


if __name__ == "__main__":
    for path in sys.argv[1:]:
        print(f"{path}:")
        puzzle_input = pathlib.Path(path).read_text().strip()
        solutions = solve(puzzle_input)
        print("\n".join(str(solution) for solution in solutions))