์ด์žฌ๋ช… ์ •๋ถ€, ํ•œ์ผยทํ•œ๋ฏธ ์ •์ƒํšŒ๋‹ด๊ณผ ์ค‘๊ตญ ํŠน์‚ฌ๋‹จ ๋™์‹œ ์ถ”์ง„

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orig. article

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์ด์žฌ๋ช… ์ •๋ถ€, ํ•œ์ผยทํ•œ๋ฏธ ์ •์ƒํšŒ๋‹ด๊ณผ ์ค‘๊ตญ ํŠน์‚ฌ๋‹จ ๋™์‹œ ์ถ”์ง„
Difficulty:
orig. article