번호	제목
6961	Manelzuma's Revenge
6962	Maple Roundup
6963	Sum Of Products
6965	Censor
6966	Cross-Number Puzzle
6968	Lottery
6969	Mountain Passage
6970	Sentences
6971	Nasty Numbers
6972	Double Knockout Competition
6973	Dynamic Dictionary Coding
6974	Long Division
6975	Deficient, Perfect, and Abundant
6976	Divisibility by 11
6977	Pattern Generator
6978	When in Rome...
6979	Maximum Distance
6980	Train Swapping
6981	Safebreaker
6982	Quadtrees