Solved by meatrow

#	Title	# Solved	Avg. Tries
16694	The ABCD Murderer	57	4.32
16702	The Silence of the Lamps	77	2.05
17192	Snakes	173	1.54
17193	I Would Walk 500 Miles	148	3.01
17194	Balancing Inversions	50	2.40
17399	트리의 외심	421	2.84
18452	Free Edges	46	1.35
18453	Graph Counting	23	1.57
19125	Bipartite Graph Coloring	9	2.89
19128	Three Points	39	2.13
19132	Substring Query	15	2.87
19133	Subset Sum	53	2.09
19134	$2x + 2$	183	2.45
19432	Acperience	20	2.30
19442	Keep On Movin	14	2.14
20042	Hotspots	33	3.27

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