Solved by isnghyeng

#	Title	# Solved	Avg. Tries
15649	N과 M (1) STANDARD	53,163	1.58
15650	N과 M (2) STANDARD	49,755	1.35
15651	N과 M (3) STANDARD	40,523	1.50
15652	N과 M (4) STANDARD	41,884	1.27
18870	좌표 압축	37,409	2.50

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