Solved by josungyuk

#	Title	# Solved	Avg. Tries
27866	문자와 문자열 STANDARD	57,102	1.48
27889	Exceptional School Name	4,361	1.41
28702	FizzBuzz	5,768	1.61
30404	오리와 박수치는 춘배	405	1.66
30802	Welcome Kit	8,574	1.86
31403	$A + B - C$	10,083	1.58

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