1370F2. The Hidden Pair (Hard Version)
Diamond IV
์ด๋ถ„ ํƒ์ƒ‰๊นŠ์ด ์šฐ์„  ํƒ์ƒ‰๊ทธ๋ž˜ํ”„ ์ด๋ก ์• ๋“œ ํ˜น์ตœ๋‹จ ๊ฒฝ๋กœํŠธ๋ฆฌ๋„ˆ๋น„ ์šฐ์„  ํƒ์ƒ‰
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‘