题解 | #密码验证合格程序#

# ss = ['021Abc9000', '021Abc9Abc1', '021ABC9000', '021$bc9000']

while True:
# if True:
    try:
    # for i in range(len(ss)):
        # astr = ss[i]
        astr = input()
        if len(astr) < 8:
            print('NG')
        else:
            score = [0, 0, 0, 0]  # 大写、小写、数字、其它符号
            repeatFlag = False
            for chr in astr:
                if chr.isalpha():
                    if chr.isupper():
                        score[0] = 1
                    else:
                        score[1] = 1
                elif chr.isdigit():
                    score[2] = 1
                elif chr != ' ':
                    score[3] = 1
                pass
            # cp_ss = ss.copy()
            for j in range(len(astr)-3):
                cp = astr[j:j+3]
                # print(cp)
                if astr.count(cp) > 1:
                    repeatFlag = True
                    break
            if repeatFlag:
                print('NG')
            elif sum(score) < 3:
                print("NG")
            else:
                print('OK')
    except:
        break