鉴于早上那题让我怀疑单调栈白学,特意来复习下单调栈 题意 考虑按照每个元素对答案的贡献来统计,那么我们只需要找到每个元素左边右边第一个比它小的就可 这题给的又是排列,简直不能再良心 #include <bits/stdc++.h> using namespace std; #define int long long const int N = 1000005; int s[N],top,a[N],l[N],r[N],n,ans; signed main() { cin>>n; fo…

[BZOJ4262]Sum Description Input 第一行一个数 t,表示询问组数. 第一行一个数 t,表示询问组数. 接下来 t 行,每行四个数 l_1, r_1, l_2, r_2. Output 一共 t 行,每行一个数 Sum. Sample Input 4 1 3 5 7 2 4 6 8 1 1 9 9 9 9 1 1 Sample Output 9322587654 9025304064 1065645568 0 HINT 1<=t<=40000,1<=L1<…

You are given an array a consisting of n elements. The imbalance value of some subsegment of this array is the difference between the maximum and minimum element from this segment. The imbalance value of the array is the sum of imbalance valuesof all…

D. Imbalanced Array time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given an array a consisting of n elements. The imbalance value of some subsegment of this array is the differenc…

Mike and Feet time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Mike is the president of country What-The-Fatherland. There are n bears living in this country besides Mike. All of them are st…

链接:https://ac.nowcoder.com/acm/contest/881/A来源:牛客网 Two arrays u and v each with m distinct elements are called equivalent if and only if RMQ(u,l,r)=RMQ(v,l,r)RMQ(u,l,r)=RMQ(v,l,r) for all 1≤l≤r≤m1≤l≤r≤m where RMQ(w,l,r)RMQ(w,l,r) denotes the index of…

Bad Hair Day Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 17774   Accepted: 6000 Description Some of Farmer John's N cows (1 ≤ N ≤ 80,000) are having a bad hair day! Since each cow is self-conscious about her messy hairstyle, FJ wants…

Mike and Feet Time Limit:1000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 548D Appoint description:  Description Mike is the president of country What-The-Fatherland. There are n bears living in thi…

题目链接 http://codeforces.com/gym/101102/problem/D problem  description Given an R×C grid with each cell containing an integer, find the number of subrectangles in this grid that contain only one distinct integer; this means every cell in a subrectangle…

Feel Good Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 13376   Accepted: 3719 Case Time Limit: 1000MS   Special Judge Description Bill is developing a new mathematical theory for human emotions. His recent investigations are dedicated…