#lowest common ancestor lca

#	Title	# Solved	Avg. Tries
13896	Sky Tax	294	3.30
14139	Izviðači	4	1.00
15060	Imperial roads	70	1.99
15326	Usmjeri	27	4.52
15339	Counting Cycles	26	2.50
15404	Divide and Conquer	35	2.06
15480	LCA와 쿼리	936	2.16
15481	그래프와 MST	485	2.66
15521	Revenge of the Broken Door	17	5.29
15622	The Cave	5	1.40
15743	New Barns	68	3.29
15756	Disruption	70	1.93
15765	Family Tree	56	2.52
15852	ANTS	20	2.40
16062	Attack on Alpha-Zet	42	1.98
16453	Linhas de Metrô	20	1.40
16511	Pokegene	13	1.69
16748	Colorful Tree	58	2.10
17019	Exercise Route	28	2.86
17033	Cow Land	352	1.93
17366	%	18	3.78
17376	룰렛	14	2.79
17399	트리의 외심	421	2.84
17459	Fruit Tree	33	2.58
17463	교준이의 심부름꾼, 민제의 고충 ("Circle" Ver.)	7	5.29
17678	Mergers	59	4.15
17680	Construction of Highway	22	1.32
17697	Railway Trip	19	2.16
17733	Water Bottle	31	3.03
18196	정기 모임	93	4.45
18218	One-Way Conveyors	33	3.94
18263	Milk Visits	165	2.59
18365	Visits	19	3.63
18372	Infernape	36	3.44
18381	XOR과 집합과 트리와 쿼리	27	2.63
18425	Putovanje	38	1.84
18534	Rooted Subtrees	41	1.56
18670	Christmas Tree	3	2.67
18794	트리와 쿼리 15	13	4.69
18889	New Year and Social Network	15	3.07
18947	Tree Hull	29	2.17
19203	Four Colors	5	1.20
19297	MST with Metropolis	45	3.84
19326	Cover the Paths	27	2.56
19363	Lowest Common Ancestor	22	5.73
19613	Mountains and Valleys	8	1.63
19619	Swapping Cities	52	2.35
19705	Roadside Advertisements	7	1.14
20132	Parity Constraint Minimum Spanning Tree	113	2.36
20295	사탕 배달	158	3.24

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