s2 ์œ ์„ ์€ ๋ฏธ์ •๋ฐœ์ธ๊ฐ€? 2์• ๋“ค์ด ๋” ์ž‘์€ ๊ฑธ๋กœ ์•„๋Š”๋ฐ s1 ๋ง›์žˆ๋Š”๋ฐ ์† ์ž‘์•„์„œ s2๊ฐ€ ๋” ๋ง›๋„๋ฆฌ ๊ฐ™์€๋ฐ