Solved by woongi9

#	Title	# Solved	Avg. Tries
17626	Four Squares	10,490	2.28
18870	좌표 압축	31,203	2.53
19236	청소년 상어	5,777	1.53
19698	헛간 청약	3,440	1.64
20040	Cycle Game STANDARD	7,123	1.99

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