#!/usr/bin/env python
# 2025 - Advent Of Code 2

# file = 'input_example.txt'
file = 'input.txt'

ranges = []
bad_id = []
with open(file, encoding="utf-8") as f:
    for line in f.readlines():
        for r in line.split(','):
            (startr, endr) = r.split('-')
            for i in range(int(startr), int(endr)+1):
                ranges.append(str(i))

print(f"ranges to inspect {len(ranges)}")
# print(ranges)

for product_id in ranges:
    if len(product_id) % 2 == 1:
        continue
    half = int(len(product_id) / 2)
    bad = True
    for cursor in range(0, half):
        if product_id[cursor] != product_id[half + cursor]:
            bad = False
            break
    if bad:
        bad_id.append(int(product_id))

# print(bad_id)
print(sum(bad_id))