摘要： Time Limit:3000MSMemory Limit:65536KTotal Submissions:29059Accepted:12565DescriptionYou have just moved from Waterloo to a big city. The people here speak an incomprehensible dialect of a foreign language. Fortunately, you have a dictionary to help you understand them.InputInput consists of up to 10 阅读全文

摘要： Time Limit:1000MSMemory Limit:65536KTotal Submissions:6700Accepted:1922DescriptionRJ Freight, a Japanese railroad company for freight operations has recently constructed exchange lines at Hazawa, Yokohama. The layout of the lines is shown in Figure 1.Figure 1: Layout of the exchange linesA freight t 阅读全文