Solved by dongdong40

#	Title	# Solved	Avg. Tries
2438	별 찍기 - 1 STANDARD	192,090	1.61
2558	A+B - 2 STANDARD	78,165	1.39
9498	시험 성적 STANDARD	213,294	1.83
10869	사칙연산 STANDARD	237,555	2.24
27866	문자와 문자열 STANDARD	63,355	1.48
31403	$A + B - C$	13,425	1.60

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