Solved by jerry0806

#	Title	# Solved	Avg. Tries
10926	??! STANDARD	137,596	1.99
10869	사칙연산 STANDARD	231,605	2.24
10818	최소, 최대	146,549	2.25
5597	Who have not handed in ?	69,148	1.94
4217	Ancient Messages	196	4.12

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