Solved by concavehull

#	Title	# Solved	Avg. Tries
25061	Antennas	45	1.78
26191	Differences	41	2.59
26464	2-LIS	17	2.12
26469	$N-1$ Truths and a Lie	10	3.20
26850	XOR Pairs	45	1.47
26851	Bicycle Tour	32	1.75
26854	Concerto de Pandemic	11	6.36
26855	Not One	37	2.35
26858	Stable Planetary System	21	3.48
30392	$K$분 그래프	50	3.14
31966	이진 트리	133	1.63
31967	오름차순	62	3.21

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