Solved by skagns153

#	Title	# Solved	Avg. Tries
28278	스택 2	13,544	2.70
28279	덱 2	7,813	2.00
28702	FizzBuzz	6,241	1.62
30459	현수막 걸기	355	3.33
30460	스위치	298	1.84
30802	Welcome Kit	9,355	1.87
31403	$A + B - C$	10,901	1.59

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