Solved by rhkwp258

#	Title	# Solved	Avg. Tries
31403	$A + B - C$	12,875	1.59
10869	사칙연산 STANDARD	235,407	2.24
2558	A+B - 2 STANDARD	77,749	1.39
2438	별 찍기 - 1 STANDARD	190,751	1.61

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