Solved by ky100499

#	Title	# Solved	Avg. Tries
30802	Welcome Kit	6,295	1.84
30804	Fruit Tanghulu	2,208	2.93
30805	Lexicographically Largest Common Subsequence	809	3.23
30923	크냑과 3D 프린터	324	1.71
30971	육회비빔밥	120	1.68
30974	What's your ETA?	93	4.63
31218	King of Data Structures	186	1.78
31403	$A + B - C$	7,543	1.56
31418	스펀지	189	2.38
31584	Bulb Game	28	1.29
31675	Exceptional Physical Attack	41	3.80
31860	열심히 일하는 중	232	1.69

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