题解 | #密码验证合格程序#

lines = []
while True:
    try:
        lines.append(input())
    except:
        break

def check_verify(line):
    if len(line) <= 8:
        return 'NG'
    else:
        for j in range(len(line) - 3):
            if line[j:j + 3] in line[j + 3:]:
                return 'NG'
        line_type = [0, 0, 0, 0]
        for i in line:
            if i.isspace():
                return 'NG'
            if i.isupper():
                line_type[0] = 1
            elif i.islower():
                line_type[1] = 1
            elif i.isdigit():
                line_type[2] = 1
            else:
                line_type[3] = 1
        if sum(line_type) >= 3:
            return 'OK'
        else:
            return 'NG'

for line in lines:
    out_result = check_verify(line)
    print(out_result)