K. ServiceTime Limit:1000MSDescriptionThere is a large and beautiful polygon pond in HY city. Lina wants to offer a service which can tell people how to travel around the pond easier. She entrusts you to finish this job. People can walk on the edge of the polygon pond.She will tell you the coordinat Read More
H. DistributionTime Limit:1500MSDescriptionOne day, Obama dreamed that he and Clinton went together to steal jewellery, got n pieces of the jewellerys. How to divide stolen jewellerys became a problem，because the estimated value of each pieces of the jewellery are not the same to them.If the total v Read More