Solved by daram9

#	Title	# Solved	Avg. Tries
20300	서강근육맨	2,210	2.72
25083	새싹 STANDARD	77,471	1.88
27866	문자와 문자열 STANDARD	62,938	1.48
31403	$A + B - C$	13,226	1.60

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