Solved by yunyuns

#	Title	# Solved	Avg. Tries
26264	빅데이터? 정보보호!	1,087	1.50
27866	문자와 문자열 STANDARD	61,002	1.48
30802	Welcome Kit	10,531	1.87
31403	$A + B - C$	12,147	1.58

123