I m b a l a n c e d A r r a y Imbalanced Array ImbalancedArray 题目描述 You are given an array a a a consisting of n n n elements. The imbalance value of some subsegment of this array is the difference between the maximum and minimum element from this se…

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…

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…

题目链接:http://codeforces.com/contest/817/problem/D 题意:给你n个数a[1..n]定义连续子段imbalance值为最大值和最小值的差,要你求这个数组的imbalance总值 题解:首先要知道imbalance的值可以有所有区间的Max的和减去所有区间Min的和.那么就是怎么求所有区间的Max和与Min和.要知道如果是以a[i]为最小值那么最小值为a[i]的区间数为a[i]左边第一个小于a[i]的位置l,a[i]右边第一个大于等于a[i]的位置r,a…

菜鸡wwb因为想不出口胡题所以来写题解了 A. chess 昨天晚上考试,有点困 开考先花五分钟扫了一边题,好开始肝$T1$ 看了一眼$m$的范围很大,第一反应矩阵快速幂?? $n$很小,那么可以打$n^4$的DP, $10min$过去了,好像就是一个$DP$啊,随便乘个组合数就好了, 最后距离考试$20min$时,因为瞎取模,把自己的$AC$覆盖了kukukuku 正解的话,首先对于第一列而言,第$1+n$列的放的$C$的个数与他相同 但是因为只知道数目我们乘上组合数就好 $f_{ij}$表示…

题目链接:http://codeforces.com/problemset/problem/442/C 题目大意:一个数列,有n个元素.你可以做n-2次操作,每次操作去除一个数字,并且得到这个数字两边相邻的数最小的分数.问你最多得到多少分. 将高度绘图,去除V的情况. 用单调栈优化,每个元素进栈一次,出栈一次.线性时间. #include <cstdio> #include <cstring> #include <algorithm> #include <vect…

题目描述 在放完棋子之后,$dirty$又开始了新的游戏. 现在他拥有一个长为$n$的数组$A$,他定义第$i$个位置的分值为$i−k+1$,其中$k$需要满足: 对于任意满足$k\leqslant j\leqslant i$的$j$,有$A[k]\leqslant A[j]\leqslant A[i]$.当对于第$i$个数,有多个$k$满足条件时,取能获得较大分值的$k$. 现在,$dirty$想要知道$A$数组中分值最大的位置对应的分值为多少. 输入格式 第一行一个整数$n$,表示$A$数组…

题目链接 http://acm.split.hdu.edu.cn/showproblem.php?pid=5875 Problem Description The shorter, the simpler. With this problem, you should be convinced of this truth.    You are given an array A of N postive integers, and M queries in the form (l,r). A fu…

http://acm.hdu.edu.cn/showproblem.php?pid=5033 2014 ACM/ICPC Asia Regional Beijing Online B 1002 Building Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 0    Accepted Submission(s): 0Special…

Max answer https://nanti.jisuanke.com/t/38228 Alice has a magic array. She suggests that the value of a interval is equal to the sum of the values in the interval, multiplied by the smallest value in the interval. Now she is planning to find the max…