Solved by personazz2

#	Title	# Solved	Avg. Tries
2042	구간 합 구하기 STANDARD	14,424	3.88
2357	최솟값과 최댓값 STANDARD	10,189	1.92
6549	Largest Rectangle in a Histogram	11,181	3.63
11437	LCA	6,239	2.44
11438	LCA 2	7,333	3.04

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