题解 | #密码验证合格程序#

def check(s):

    if len(s)<=8:

        return False

    a,b,c,d = 0,0,0,0

    for i in s:

        if i.isupper():

            a = 1

        elif i.islower():

            b = 1

        elif i.isdigit():

            c = 1

        else:

            d = 1

    if a+b+c+d < 3:

        return False

    for i in range(len(s)-2):

        if s[i:i+3] in s[i+1:]:

            return False

    return True

while 1:

    try:

        s = input()

        if check(s):

            print('OK')

        else:

            print('NG')

    except:

        break