摘要：
Road ConstructionTime Limit: 2000MSMemory Limit: 65536KTotal Submissions: 7370Accepted: 3694DescriptionIt's almost summer time, and that means that it's almost summer construction time! This year, the good people who are in charge of the roads on the tropical island paradise of Remote Island 阅读全文
摘要：
Redundant PathsTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 7651Accepted: 3337DescriptionIn order to get from one of the F (1 2 and 1 –> 6 –> 5 –> 21 – 4: 1 –> 2 –> 3 –> 4 and 1 –> 6 –> 5 –> 43 – 7: 3 –> 4 –> 7 and 3 –> 2 –> 5 –> 7Every pair of f 阅读全文