Safecracker
=== Op tech briefing, 2002/11/02 06:42 CST ===
"The item is locked in a Klein safe behind a painting in the second-floor library. Klein safes are extremely rare; most of them, along with Klein and his factory, were destroyed in World >>继续阅读
Knight Moves
A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest closed tour of knight moves that visits each square of a given set of n squares on a chessboard exactly once. He thinks that the >>继续阅读
1337 - The Crystal Maze
To be more exact, the maze can be modeled as an M x N 2D grid where M denotes the number of rows and N denotes the number of columns. There are three types of cells in the grid:You are in a plane and you are about to be drop >>继续阅读
1012 - Guilty Prince
For simplicity, you can consider the place as a rectangular grid consisting of some cells. A cell can be a land or can contain water. Each time the prince can move to a new cell from his current position if they share a side.On >>继续阅读