#!/usr/bin/env python3

from typing import TextIO


def part1(sections: TextIO) -> int:
    overlaps: int = 0

    for line in sections:
        line = line.strip().split(",")

        first_st = int(line[0].split("-")[0])
        first_nd = int(line[0].split("-")[1])

        sec_st = int(line[1].split("-")[0])
        sec_nd = int(line[1].split("-")[1])

        first = list(range(first_st, first_nd + 1))
        second = list(range(sec_st, sec_nd + 1))

        if first_st in second and first_nd in second:
            overlaps += 1
        elif sec_st in first and sec_nd in first:
            overlaps += 1

    return overlaps


def part2(sections: TextIO) -> int:
    all_overlaps: int = 0

    for line in sections:
        line = line.strip().split(",")

        first_st = int(line[0].split("-")[0])
        first_nd = int(line[0].split("-")[1])

        sec_st = int(line[1].split("-")[0])
        sec_nd = int(line[1].split("-")[1])

        first = list(range(first_st, first_nd + 1))
        second = list(range(sec_st, sec_nd + 1))

        if any(i in first for i in second):
            all_overlaps += 1

    return all_overlaps


if __name__ == "__main__":
    print(part1(open("day04.txt")))
    print(part2(open("day04.txt")))