def captcha_next(inputvalue):
    same_as_next = (
        digit
        for digit, next in zip(inputvalue, inputvalue[1:] + inputvalue[0])
        if digit == next
    )
    return sum(map(int, same_as_next))


tests = {
    "1122": 3,
    "1111": 4,
    "1234": 0,
    "91212129": 9,
}
for in_, out in tests.items():
    assert captcha_next(in_) == out

print("Part 1:", captcha_next(inputvalue))

def captcha_halfway(inputvalue):
    halfway = len(inputvalue) // 2
    same_as_halfway = (
        digit
        for digit, other in zip(inputvalue, inputvalue[halfway:] + inputvalue[:halfway])
        if digit == other
    )
    return sum(map(int, same_as_halfway))


tests = {
    "1212": 6,
    "1221": 0,
    "123425": 4,
    "123123": 12,
    "12131415": 4,
}
for in_, out in tests.items():
    assert captcha_halfway(in_) == out

print("Part 2:", captcha_halfway(inputvalue))