fua_的博客

DescriptionAs a sponsor of programming contests, Yu has many factors to consider. Recently, he has found that the difficulties of problems can be a serious factor.For novices, they may simply ignore...

DescriptionFJ is about to take his N (1 ≤ N ≤ 2,000) cows to the annual"Farmer of the Year" competition. In this contest every farmer arranges his cows in a line and herds them past the judges.The c...