题解 | #密码验证合格程序#

import sys
from collections import defaultdict
while True:
    try:
        sec = input().strip()
        if len(sec) <= 8:
            print("NG")
            continue
        dictsec = defaultdict(int)
        for i in range(len(sec)-2):
            dictsec[sec[i:i+3]] += 1
        if max(dictsec.values()) >= 2:
            print("NG")
            continue
        a, b, c, d = 0, 0, 0, 0
        for item in sec:
            if ord('a') <= ord(item) <= ord('z'):
                a = 1
            elif ord('A') <= ord(item) <= ord('Z'):
                b = 1
            elif ord('0') <= ord(item) <= ord('9'):
                c = 1
            else:
                d = 1
        if a+b+c+d >=3:
            print("OK")
        else:
            print("NG")
    except:
        break