Solved by bs0551

#	Title	# Solved	Avg. Tries
15964	이상한 기호 STANDARD	19,377	1.81
25083	새싹 STANDARD	75,019	1.88
27866	문자와 문자열 STANDARD	60,011	1.48
30802	Welcome Kit	9,953	1.87
31403	$A + B - C$	11,555	1.59

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