Solved by chim712

#	Title	# Solved	Avg. Tries
30087	진흥원 세미나	2,450	1.36
30802	Welcome Kit	7,863	1.86
30803	Faucet	382	1.99
31395	Number of Sorted Contiguous Subsequences	548	2.05
31403	$A + B - C$	9,291	1.58
31450	Everyone is a winner	1,564	1.31
31458	!!초콜릿 중독 주의!!	595	1.33
31561	시계탑	654	1.47

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