safe = unsafe = 0


def is_safe(report: str) -> bool:
    last_num = 0
    increase = True
    for ii, num in enumerate((int(elem) for elem in report.split())):
        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(report):
            safe += 1
        else:
            unsafe += 1

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