์ง€์Šˆ๋ผ2๋Š” ์–ด๋–ฐ?


์–˜๋„ ์†Œ๋ฆฌ ํผ?


๊ทธ๋ƒฅ r1ํ”„๋งฅ ์“ธ๊นŒ..