Solved by nkdevil

#	Title	# Solved	Avg. Tries
15552	빠른 A+B STANDARD	132,789	2.20
16953	A → B	21,761	2.51
17609	회문	6,884	3.45
18870	좌표 압축	36,890	2.51
19939	박 터뜨리기	4,284	2.65

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