Solved by sleepyday1104

#	Title	# Solved	Avg. Tries
15650	N과 M (2) STANDARD	49,953	1.35
15651	N과 M (3) STANDARD	40,701	1.50
15686	치킨 배달	31,422	2.15
15971	두 로봇	2,293	2.70
18870	좌표 압축	37,573	2.50

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