번호	제목
9789	Friendship Graph
9790	Elephant Show
9791	Encoding Binary Numbers
9792	Chorus
9793	Length and Frequency of Sentences
9794	Another Word Sorting
9795	Form Guide
9796	Cracking Tree Codes
9797	uHunt
9798	Cartesian Tree
9799	Strange Graph
9800	Patience
9801	Commuter train
9802	Self-Replicating Numbers
9803	Magic Multiplying Machine
9804	Intuitionistic Logic
9805	Pyramids
9806	The King
9813	Computing
9814	Coding of Permutations