摘要：
Problem DescriptionThe doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began to shake, and the doggie could feel the ground sinking. He realized that the bone was a trap, and he tried desperately to get out of this maze.The maze was a recta 阅读全文
摘要：
Problem DescriptionZty is a man that always full of enthusiasm. He wants to solve every kind of difficulty ACM problem in the world. And he has a habit that he does not like to solvea problem that is easy than problem he had solved. Now yifenfei give him n difficulty problems, and tell him their rel 阅读全文