masalah 2jawapan pendek1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000?1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000뭐시기