Please, another Queries on Array? 利用欧拉函数的计算方法, 用线段树搞一搞就好啦. #include<bits/stdc++.h> #define LL long long #define fi first #define se second #define mk make_pair #define PLL pair<LL, LL> #define PLI pair<LL, int> #define PII pair<int, i…
开始觉得是规律题的,自以为是的推了一个规律,结果测试数据都没过....看了love神的博客才发现只是把式子展开就找到规律了.不过挺6的是我虽然想错了,但是维护的的东西没有错,只是改改(改了进两个小时好吗????)就过了 题意:给你一串数字,然后两种操作: “= l r x” 是把数组第l位置到r位置的值都变为x “? l r k”就是求一个公式的和 ∑(l <= i <= r) ai*(i-l+1)^k 题解:因为k比较小嘛,可以展开式子看一下规律,展开后注意要往 构造常数或者构造递归 迭代 …
A. Stones on the Table \(dp(i)\)表示最后颜色为\(i\)的最长长度. B. Queue at the School 模拟. C. Below the Diagonal 按行内点数排序,对于每行来说,从小的列开始放点. D. BerDonalds (看题解还不会,弃坑) E. More Queries to Array... 对于\(a_i\cdot (i-l+1)^k\)可以二项式展开,则原式=\[a_i\cdot\sum_{j=0}^{k}{\binom{k}{…
1100 - Again Array Queries PDF (English) Statistics Forum Time Limit: 3 second(s) Memory Limit: 32 MB Given an array with n integers, and you are given two indices i and j (i ≠ j) in the array. You have to find two integers in the range whose diffe…
Description You are given an array a of size n, and q queries to it. There are queries of two types: 1 li ri — perform a cyclic shift of the segment [li, ri] to the right. That is, for every x such that li ≤ x < ri new value of ax + 1 becomes equal t…
E. Array Queries 题目链接:http://codeforces.com/problemset/problem/797/E time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output a is an array of n positive integers, all of which are not greater than…
a is an array of n positive integers, all of which are not greater than n. You have to process q queries to this array. Each query is represented by two numbers p and k. Several operations are performed in each query; each operation changes p to p + …
You are given an array a of size n, and q queries to it. There are queries of two types: 1 li ri — perform a cyclic shift of the segment [li, ri] to the right. That is, for every x such that li ≤ x < ri new value of ax + 1 becomes equal to old value…