3401: [Usaco2009 Mar]Look Up 仰望Time Limit:3 SecMemory Limit:128 MBSubmit:87Solved:58[Submit][Status]Description约翰的N(1≤N≤105)头奶牛站成一排,奶牛i的身高是Hi(l≤Hi≤1,0... Read More
3400: [Usaco2009 Mar]Cow Frisbee Team 奶牛沙盘队Time Limit:3 SecMemory Limit:128 MBSubmit:89Solved:60[Submit][Status]Description农夫顿因开始玩飞盘之后,约翰也打算让奶牛们享受飞盘的乐... Read More
3399: [Usaco2009 Mar]Sand Castle城堡Time Limit:3 SecMemory Limit:128 MBSubmit:22Solved:17[Submit][Status]Description约翰用沙子建了一座城堡.正如所有城堡的城墙,这城墙也有许多枪眼,两个相邻... Read More