题解 | #密码验证合格程序#

while True:
    try:
        string = input()
        ll = len(string)
        a,b,c,d = 0,0,0,0
        flag = True
        for s in string:
            if s.isdigit():
                a = 1
            elif s.isupper():
                b = 1
            elif s.islower():
                c = 1
            else:
                d = 1
        for i in range(ll-3):
            if string.count(string[i:i+3])>1:
                flag = False
        if ll>8 and a+b+c+d>=3 and flag==True:
            print("OK")
        else:
            print("NG")

    except:
        break