ํ™˜์œจ 1500์› ์œ„ํ˜‘, ์ •๋ถ€ ‘4์ž ํ˜‘์˜์ฒด’ ๊ธด๊ธ‰ ๊ฐ€๋™

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orig. article

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ํ™˜์œจ 1500์› ์œ„ํ˜‘, ์ •๋ถ€ ‘4์ž ํ˜‘์˜์ฒด’ ๊ธด๊ธ‰ ๊ฐ€๋™
Difficulty:
orig. article