题解 | #密码验证合格程序#

while True:
    try:
        passward = input()

        num_signal = 0
        upper_signal = 0
        lower_signal = 0
        else_signal = 0

        check_repeat = 0

        for c in passward:
            if c.isdigit(): num_signal = 1
            elif c.isupper(): upper_signal = 1
            elif c.islower(): lower_signal = 1
            else: else_signal = 1

        if len(passward) <= 8 or (num_signal + upper_signal + lower_signal + else_signal) < 3:
            print('NG')
        else:
            for i in range(len(passward) - 2):
                check_str = passward[i:i+3]
                if passward.count(check_str) >= 2:
                    check_repeat = 1
                    break
            if check_repeat == 1:
                print('NG')
            else:
                print('OK')

    except:
        break