摘要： Guardian of DecencyTime Limit: 3000MSMemory Limit: 65536KTotal Submissions: 4071Accepted: 1702DescriptionFrank N. Stein is a very conservative high-sc... 阅读全文

摘要： Going HomeTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 13981Accepted: 7156DescriptionOn a grid map there are n little men and n houses. In each unit time, every little man can move one unit step, either horizontally, or vertically, to an adjacent point. For each little man, you need to p 阅读全文

摘要： Air RaidTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1904Accepted Submission(s): 1225Problem DescriptionConsider a town where all the streets are one-way and each street leads from one intersection to another. It is also known that starting from 阅读全文