题解 | #密码验证合格程序#

import sys


def check_password(password):
    if len(password) <= 8:
        return False
    has_upper, has_lower, has_number, has_signal = False, False, False, False
    lower_list = "qwertyuiopasdfghjklzxcvbnm"
    upper_list = "QWERTYUIOPASDFGHJKLZXCVBNM"
    number_list = "1234567890"
    for i in range(len(password)):
        if char in lower_list:
            has_lower = True
        elif char in upper_list:
            has_upper = True
        elif char in number_list:
            has_number = True
        else:
            has_signal = True
        # 检查j的值
        if i + 1 >= len(password):
        for j in range(i + 1, len(password)):    
            if password[i:i+3] == password[j:j+3]:
                return False
    
    if sum([has_lower, has_upper, has_number, has_signal]) < 3:
        return False
    return True


for line in sys.stdin:
    password = line.strip()
    if check_password(password):
        print("OK")
    else:
        print("NG")