Why Did the Cow Cross the Road III 时间限制: 1 Sec 内存限制: 128 MB提交: 65 解决: 28[提交][状态][讨论版] 题目描述 The layout of Farmer John's farm is quite peculiar, with a large circular road running around the perimeter of the main field on which his cows graze during…
P3663 [USACO17FEB]Why Did the Cow Cross the Road III S 题目描述 Why did the cow cross the road? Well, one reason is that Farmer John's farm simply has a lot of roads, making it impossible for his cows to travel around without crossing many of them. 为什么牛过…
[USACO17FEB]Why Did the Cow Cross the Road III P 考虑我们对每种颜色记录这样一个信息 \((x,y,z)\),即左边出现的位置,右边出现的位置,该颜色. 于是统计的是\(x < x_2,y > y_2,|z - z2| > k\)的数对数量. 因为\(CDQ\)分治的过程是,第一维事先排序,第二维递归进行,第三维用数据结构统计,所以 上述这个数量是很好处理的. // Problem: P3658 [USACO17FEB]Why Did th…
题目描述 Why did the cow cross the road? Well, one reason is that Farmer John's farm simply has a lot of roads, making it impossible for his cows to travel around without crossing many of them. 为什么牛过马路? 其中一个简单的原因就是农民约翰的农场有很多道路,使得他的母牛不得不穿越许多道路. FJ's farm…
4989: [Usaco2017 Feb]Why Did the Cow Cross the Road Time Limit: 10 Sec Memory Limit: 256 MBSubmit: 153 Solved: 70[Submit][Status][Discuss] Description Why did the cow cross the road? We may never know the full reason, but it is certain that Farmer…
题目背景 给定长度为2N的序列,1~N各处现过2次,i第一次出现位置记为ai,第二次记为bi,求满足ai<aj<bi<bj的对数 题目描述 The layout of Farmer John's farm is quite peculiar, with a large circular road running around the perimeter of the main field on which his cows graze during the day. Every morn…
题目描述 Farmer John is continuing to ponder the issue of cows crossing the road through his farm, introduced in the preceding two problems. He realizes now that the threshold for friendliness is a bit more subtle than he previously considered -- breeds …
