摘要： Online Judge Problem Set Authors Online Contests User Web BoardHome PageF.A.QsStatistical Charts ProblemsSubmit ProblemOnline StatusProb.ID: RegisterU... 阅读全文

摘要： Red and BlackTime Limit: 1000MS Memory Limit: 30000K Total Submissions: 17584 Accepted: 9279 DescriptionThere is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he can move to one of four adjacent tiles. But h.. 阅读全文