Solved by personazz2

#	Title	# Solved	Avg. Tries
2042	구간 합 구하기 STANDARD	13,013	3.93
2357	최솟값과 최댓값 STANDARD	9,459	1.92
6549	Largest Rectangle in a Histogram	10,151	3.69
11437	LCA	6,157	2.49
11438	LCA 2	6,718	3.05

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