#!/usr/bin/env python3
import re


def yield_spans(gs: dict):
    for g in gs.values():
        yield g[:2]
        yield g[2:]


def in_spans(x, spans):
    for span in spans:
        if span[0] <= x <= span[1]:
            return True
    return False


lines = (x.strip() for x in open("input.txt"))
REGEX_RANGES = re.compile(r"^([a-z ]+): (\d+)-(\d+) or (\d+)-(\d+)$")
groups = {}
your = ()
nearby = []
read_step = 0

for line in lines:
    if read_step == 0:
        if line == "":
            read_step = 1
            continue
        match = REGEX_RANGES.match(line)
        groups[match[1]] = list(map(int, match.groups()[1:]))
    elif read_step == 1:
        if line == "":
            read_step = 2
            continue
        if line.startswith("your"):
            continue
        your = list(map(int, line.split(',')))
    elif read_step == 2:
        if line.startswith("nearby"):
            continue
        nearby.append(list(map(int, line.split(','))))

valid_spans = []
for span in yield_spans(groups):
    start_idx = next((i for i, v in enumerate(valid_spans) if span[0] <= v[1]), len(valid_spans))
    end_idx = next((len(valid_spans)-i for i, v in enumerate(valid_spans[::-1]) if span[1] >= v[0]), 0)
    for idx in range(start_idx, end_idx):
        popped = valid_spans.pop(start_idx)
        span = (min(popped[0], span[0]), max(popped[1], span[1]))
    valid_spans.insert(start_idx, tuple(span))

print("Valid Spans:", valid_spans)


invalid_sum = sum(x for n in nearby for x in n if not in_spans(x, valid_spans))
print(invalid_sum)