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Now to combine two arrays, the maximum subarray sum of the combined array would bemax(p(1)2,p(2)2,p(1)2+p(1)3+p(2)1+p(2)2)max(p2(1),p2(2),p2(1)+p3(1)+p1(2)+p2(2)). The remaining left and right side parts can be maintained easily. ...
This problem is similar to a standard problem but it has a different format and constraints. In the standard problem you are given an array of integers, and you have to find one or more consecutive elements in this array where their sum is the maximum possible sum. But in this problem yo...
I tried to code solution for the Segment With Maximum Sum problem from the Segment Trees Section in ITMO pilot course. Link To the Question class Sgtree{ private: vl seg,pref,suff,sum; int _n; void leaf_update(ll node,ll val) { pref[node] = val; suff[node] = val; seg[node] =...
[Codeforces 280D]k-Maximum Subsequence Sum(线段树) 题面 给出一个序列,序列里面的数有正有负,有两种操作 1.单点修改 2.区间查询,在区间中选出至多k个不相交的子区间,使得这至多k个子区间中数的和最大 分析 极其毒瘤的线段树,要维护18个变量
C. Little Girl and Maximum Sum题意给q个[l,r]将所有这些区间里面的数相加和最大。 可以进行的操作是任意排列数组题解对出现的每个区间内的位置加上1,代表权值 操作完之后求一遍前缀和,得到每个位置的权值 然后贪心的考虑,权值越大,应该分配给该位置的数越大越好这样对答案的贡献最大。
Maximum Sum of Products CodeForces - 1519D (区间DP) 技术标签: 动态规划题意 给出两个长度为n ( 1 ≤ n ≤ 5000 ) a , b 可以最多一次对序列a 的某段子数组执行翻转操作,求出如何翻转使得 ∑ i = 1 n a i ∗ b i \sum_{i=1}^{n}a_{i}*b_{i} ∑i=1nai∗bi最大...
codeforces 276c Little Girl and Maximum Sum The little girl loves the problems on array queries very much. One day she came across a rather well-known problem: you’ve got an array of n elements (the elements of the array are indexed starting from 1); also, there are q ...
Codeforces Round #513 B. Maximum Sum of Digits(思维) 题目链接:http://codeforces.com/contest/1060/problem/B 题意是输入一个n,从1-n中找两个数,使得a+b=n,而且S(a)+S(b)的值是所有两个数中最大的。S函数求的是一个数每一位上的数字之和,比如S(123) = 1 + 2 + 3。
【Codeforces 276C】Little Girl and Maximum Sum,【链接】"我是链接,点我呀:)"【题意】在这里输入题意【题解】最后的和。其实可以看成是∑biai的形式。这里的bi这个系数表示的是有多少个区间覆盖了ai这个元素。既然这样的话。那么我们可以用个技巧li++,ri的技巧算出来每个