Solved by bbss456

#	Title	# Solved	Avg. Tries
11723	집합	29,013	3.38
14681	Quadrant Selection STANDARD	156,915	1.64
15649	N과 M (1) STANDARD	51,044	1.58
18108	1998년생인 내가 태국에서는 2541년생?!	126,461	1.57
18870	좌표 압축	35,251	2.52
23971	ZOAC 4	4,672	2.06

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