Solved by dbdhks3136

#	Title	# Solved	Avg. Tries
28017	게임을 클리어하자	412	2.31
31395	Number of Sorted Contiguous Subsequences	556	2.05
31403	$A + B - C$	10,475	1.58
31408	당직 근무표	498	1.75
31409	착신 전환 소동	297	1.62

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