Solved by chosd1123

#	Title	# Solved	Avg. Tries
14681	Quadrant Selection STANDARD	159,311	1.64
15552	빠른 A+B STANDARD	131,279	2.20
15829	Hashing	19,785	3.33
15964	이상한 기호 STANDARD	19,186	1.81
25083	새싹 STANDARD	74,408	1.88
27866	문자와 문자열 STANDARD	59,199	1.48
30802	Welcome Kit	9,550	1.87
31403	$A + B - C$	11,117	1.59

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