Solved by cxz9700

#	Title	# Solved	Avg. Tries
27433	팩토리얼 2	17,750	2.09
27866	문자와 문자열 STANDARD	63,243	1.48
28278	스택 2	15,039	2.69
28279	덱 2	8,715	1.98
28702	FizzBuzz	7,598	1.63
30802	Welcome Kit	11,529	1.88
31403	$A + B - C$	13,372	1.60

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