번호	제목
12229	Last Hit (Large)
12230	Crime House (Small)
12231	Crime House (Large)
12232	Willow (Small)
12233	Willow (Large)
12234	Data Packing (Small)
12235	Data Packing (Large)
12236	Up and Down (Small)
12237	Up and Down (Large)
12238	Don't Break The Nile (Small)
12239	Don't Break The Nile (Large)
12240	Trie Sharding (Small)
12241	Trie Sharding (Large)
12242	Part Elf (Small)
12243	Part Elf (Large)
12244	Reordering Train Cars (Small)
12245	Reordering Train Cars (Large)
12246	Enclosure (Small)
12247	Enclosure (Large)
12248	The Repeater (Small)