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1185D. Extra Element
Gold IV
๊ตฌํ˜„์ˆ˜ํ•™์ž‘์€ ์ง‘ํ•ฉ์—์„œ ํฐ ์ง‘ํ•ฉ์œผ๋กœ ํ•ฉ์น˜๋Š” ํ…Œํฌ๋‹‰์ •๋ ฌ
Codeforces

์ด ๋ฌธ์ œ์— ๋Œ€ํ•œ ๊ฐ€์ด๋“œ

์•„์ง ์ž‘์„ฑ๋œ ๊ฐ€์ด๋“œ๊ฐ€ ์—†์Šต๋‹ˆ๋‹ค.

์ด ๋ฌธ์ œ๋ฅผ ํฌํ•จํ•˜๋Š” ๋ฌธ์ œ์ง‘