Solved by lch0005

#	Title	# Solved	Avg. Tries
27323	직사각형	21,814	1.15
27866	문자와 문자열 STANDARD	55,085	1.48
28278	스택 2	12,453	2.71
28279	덱 2	7,184	2.01
30802	Welcome Kit	7,573	1.86
31403	$A + B - C$	9,020	1.58

1345