Solved by 2wodnjs7

#	Title	# Solved	Avg. Tries
30917	A+B - 10 (제1편)	620	1.65
30924	A+B - 10 (제2편)	332	3.88
31403	$A + B - C$	9,355	1.58
31945	정육면체의 네 꼭짓점	476	1.43

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