lljjccsskk的专栏

Network of Schools Time Limit:1000MS    Memory Limit:10000KB    64bit IO Format:%I64d & %I64u Description A number of schools are connected to a computer network. Agreements have been dev

Popular Cows Time Limit:2000MS    Memory Limit:65536KB    64bit IO Format:%I64d & %I64u SubmitStatus Description Every cow's dream is to become the most popular cow in the herd. In a herd

CheckpostsTime Limit:2000MS    Memory Limit:262144KB    64bit IO Format:%I64d & %I64u SubmitStatus Description Your city has n junctions. There are mone-way roads between the junctions. A