摘要：
The lowest common ancestor (LCA) of two nodes U and V in a tree is the deepest node that has both U and V as descendants. Given any two nodes in a bin 阅读全文
摘要：
The "travelling salesman problem" asks the following question: "Given a list of cities and the distances between each pair of cities, what is the shor 阅读全文
摘要：
When shipping goods with containers, we have to be careful not to pack some incompatible goods into the same container, or we might get ourselves in s 阅读全文
摘要：
Werewolf（狼人杀） is a game in which the players are partitioned into two parties: the werewolves and the human beings. Suppose that in a game, player #1 阅读全文