Codeforces Round #345 (Div. 1) A watchmen

原题A. Watchmetime limit per tes3 secondmemory limit per tes256 megabyteinpustandard inpuoutpustandard outpuWatchmen are in a danger and Doctor Manhattan together with his friend Daniel Dreiberg should warn them as soon as possible. There are n watchmen on a plane, the i-th watchman is located at point (xi, yi).They need to arrange a plan, but there are some difficulties on their way. As yo... Read More