Solved by chocorune

#	Title	# Solved	Avg. Tries
11723	집합	29,239	3.38
12738	가장 긴 증가하는 부분 수열 3	8,385	1.63
13424	비밀 모임	1,431	1.92
14681	Quadrant Selection STANDARD	157,776	1.64
15552	빠른 A+B STANDARD	130,131	2.20
20046	Road Reconstruction	649	2.06

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