from typing import Generator

safe = unsafe = 0


def is_safe_with_dampening(report: str) -> bool:
    numbers = [int(elem) for elem in report.split()]
    for ii in range(len(numbers)):
        if is_safe((elem for idx, elem in enumerate(numbers) if idx != ii)):
            return True

    return False


def is_safe(numbers: Generator[int, None, None]) -> bool:
    last_num = 0
    increase = True
    for ii, num in enumerate(numbers):
        if ii != 0:
            if ii == 1:
                increase = num > last_num

            if (num > last_num) != increase:
                return False

            diff = abs(num - last_num)
            if diff < 1 or diff > 3:
                return False

        last_num = num

    return True


with open("input") as f:
    for report in f.readlines():
        if is_safe_with_dampening(report):
            safe += 1
        else:
            unsafe += 1

print(f"safe: {safe}\nunsafe: {unsafe}")