Solved by suengwone

#	Title	# Solved	Avg. Tries
15664	N과 M (10) STANDARD	11,459	1.26
15666	N과 M (12) STANDARD	15,572	1.25
15686	치킨 배달	29,428	2.16
15881	Pen Pineapple Apple Pen	1,042	1.90
16953	A → B	20,322	2.52
18870	좌표 압축	34,372	2.52

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