2주차. solution - 김민호2

def solution(S, T):
    sh, sm, ss = map(int, S.split(":"))
    th, tm, ts = map(int, T.split(":"))

    cnt = 0

    while True:
        ssh, ssm, sss = str(sh), str(sm), str(ss)
        if sh < 10:
            ssh = '0' + str(sh)
        if sm < 10:
            ssm = '0' + str(sm)
        if ss < 10:
            sss = '0' + str(ss)
        merge = ssh + ssm + sss
        if len(set(merge)) <= 2:
            cnt += 1

        if th == sh and sm == tm and ss == ts:
            break

        ss += 1
        if ss == 60:
            ss = 0
            sm += 1

        if sm == 60:
            sm = 0
            sh += 1

    return cnt


print(solution("00:00:59", "00:01:00"))
print(solution("22:22:21", "22:22:23"))
print(solution("15:15:00", "15:15:12"))
print(solution("00:00:00", "23:59:59"))
print(solution("00:00:00", "00:00:11"))