题目描述 FJ's N (1 ≤ N ≤ 10,000) cows conveniently indexed 1..N are standing in a line. Each cow has a positive integer height (which is a bit of secret). You are told only the height H (1 ≤ H ≤ 1,000,000) of the tallest cow along with the index I of tha…

题意略去. 考虑给定的R对pair(A, B). 即A能看见B,这意味着B不比A低,并且区间内部的所有元素的高度严格小于A的高度. 我们规定区间的方向:若A > B,为反方向,反之称为正方向. 容易发现,区间在同一方向上不交叉,即要么相离,要么相互包含. 在相反反方向上,若两区间不相互包含,必定是有且仅有一个公共区间端点. 首先将所有idx上的高度默认设置为H. 对于相离的区间,他们之间的计算是独立的. 考虑相互包含的区间,先考虑范围最大的那个区间,处理之间闭区间[A,B]上的高度是相同的,满足…

P2879 [USACO07JAN]区间统计Tallest Cow 差分 对于每个限制$(l,r)$,我们建立一个差分数组$a[i]$ 使$a[l+1]--,a[r]++$,表示$(l,r)$区间内的数至少比$l,r$小$1$ 最后统计下前缀和,顺便把最大高度加上去. 记得判重. (逃一节晚自习真chiji) 不写了,放风时间到了. #include<iostream> #include<cstring> #include<cstdio> #include<alg…

Description FJ's N (1 <= N <= 10,000) cows conveniently indexed 1..N are standing in a line. Each cow has a positive integer height (which is a bit of secret). You are told only the height H (1 <= H <= 1,000,000) of the tallest cow along with…

题目 FJ's N(1≤N≤10,000) cows conveniently indexed 1..N are standing in a line. Each cow has a positive integer height (which is a bit of secret). You are told only the height H(1≤H≤1,000,000) of the tallest cow along with the index I of that cow. FJ ha…

http://www.lydsy.com/JudgeOnline/problem.php?id=1635 差分序列是个好东西啊....很多地方都用了啊,,, 线性的进行区间操作orz 有题可知 h[a+1]~a[b-1]都是比h[a]和h[b]小,那么最佳方案就是将次区间的所有高度-1,那么我们就将整个区间-1 也就是sum[a+1]--, sum[b]++ 而条件h[a]>=h[b]我还不明觉厉啊..... (脑补:假设一般情况下h[a]==h[b]的,而却有c使得(a, c), pos[c]…

题目描述 FJ's N (1 ≤ N ≤ 10,000) cows conveniently indexed 1..N are standing in a line. Each cow has a positive integer height (which is a bit of secret). You are told only the height H (1 ≤ H ≤ 1,000,000) of the tallest cow along with the index I of tha…

题目 FJ's \(N (1 ≤ N ≤ 10,000)\) cows conveniently indexed 1..N are standing in a line. Each cow has a positive integer height (which is a bit of secret). You are told only the height \(H (1 ≤ H ≤ 1,000,000)\) of the tallest cow along with the index I…

1635: [Usaco2007 Jan]Tallest Cow 最高的牛 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 346  Solved: 184[Submit][Status] Description FJ's N (1 <= N <= 10,000) cows conveniently indexed 1..N are standing in a line. Each cow has a positive integer height…

题目 1635: [Usaco2007 Jan]Tallest Cow 最高的牛 Time Limit: 5 Sec  Memory Limit: 64 MB Description FJ's N (1 <= N <= 10,000) cows conveniently indexed 1..N are standing in a line. Each cow has a positive integer height (which is a bit of secret). You are t…