Solved by tank7113

#	Title	# Solved	Avg. Tries
26574	Copier	2,920	1.17
27323	직사각형	22,598	1.15
27866	문자와 문자열 STANDARD	57,102	1.48
29751	Triangle	3,882	1.42
30328	Java Warriors	1,968	1.10
30802	Welcome Kit	8,574	1.86
30979	유치원생 파댕이 돌보기	1,376	1.25
31403	$A + B - C$	10,083	1.58

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