Solved by neoxenesis

#	Title	# Solved	Avg. Tries
16562	친구비	4,305	2.36
17386	선분 교차 1	4,056	2.70
17509	And the Winner Is... Ourselves!	834	1.14
18258	큐 2	30,292	3.04
19577	수학은 재밌어	589	2.97

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