def load_line(inputstr):
    return list(map(int, inputstr[:-1]))


# PART 1


def sum_matching(digits):
    offset = digits[1:] + digits
    total = 0
    for x, y in zip(digits, offset):
        if x == y:
            total += x
    return total


# PART 2


def sum_matching_2(digits):
    offset = digits[len(digits) // 2 :] + digits
    total = 0
    for x, y in zip(digits, offset):
        if x == y:
            total += x
    return total


def solve(inputstr):
    digits = load_line(inputstr)
    total = sum_matching(digits)
    print(f"Part 1: {total}")
    total_2 = sum_matching_2(digits)
    print(f"Part 2: {total_2}")