题目大意:Codeforces 444C DZY Loves Colors 题目大意:两种操作,1是改动区间上l到r上面德值为x,2是询问l到r区间总的改动值. 解题思路:线段树模板题. #include <cstdio> #include <cstring> #include <cstdlib> #include <algorithm> using namespace std; const int maxn = 5*1e5; typedef long lo…

DZY loves colors, and he enjoys painting. On a colorful day, DZY gets a colorful ribbon, which consists of n units (they are numbered from 1 to n from left to right). The color of thei-th unit of the ribbon is i at first. It is colorful enough, but w…

题目链接: http://codeforces.com/problemset/problem/444/C J. DZY Loves Colors time limit per test:2 secondsmemory limit per test:256 megabytes 问题描述 DZY loves colors, and he enjoys painting. On a colorful day, DZY gets a colorful ribbon, which consists of…

C. DZY Loves Colors time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output DZY loves colors, and he enjoys painting. On a colorful day, DZY gets a colorful ribbon, which consists of n units (they…

DZY Loves Sorting Time Limit: 12000/6000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 753    Accepted Submission(s): 249 Problem Description DZY has a sequence a[1..n]. It is a permutation of integers 1∼n. Now h…

题目链接: 传送门 DZY Loves Chemistry time limit per test1 second     memory limit per test256 megabytes Description DZY loves Physics, and he enjoys calculating density. Almost everything has density, even a graph. We define the density of a non-directed gr…

题目链接:http://codeforces.com/contest/444/problem/C 给定一个长度为n的序列,初始时ai=i,vali=0(1≤i≤n).有两种操作: 将区间[L,R]的值改为x,并且当一个数从y改成x时它的权值vali会增加|x−y|. 询问区间[L,R]的权值和. n≤10^5,1≤x≤10^6. 感觉这是一个比较好的考察线段树区间更新的性质. 当区间的a[i]一样时,区间更新即可,这是剪枝. 注意,lazy标记存的是增量. #include <bits/stdc…

题目大意: 1 l r x操作 讲 [l,r]上的节点涂成x颜色,而且每一个节点的值都加上 |y-x| y为涂之前的颜色 2 l r  操作,求出[l,r]上的和. 思路分析: 假设一个区间为同样的颜色.那么我们才干够合并操作. 所以我们之前找同样的区间就好. 可是问题是怎样合并操作. 那么我们定义一个val  表示这个区间每一个位置上应该加上的值. pushdown 的时候这个值是能够相加的. #include <cstdio> #include <iostream> #incl…

题目 Source http://codeforces.com/problemset/problem/444/C Description DZY loves colors, and he enjoys painting. On a colorful day, DZY gets a colorful ribbon, which consists of n units (they are numbered from 1 to n from left to right). The color of t…

C. DZY Loves Colors 题目连接: http://codeforces.com/contest/444/problem/C Description DZY loves colors, and he enjoys painting. On a colorful day, DZY gets a colorful ribbon, which consists of n units (they are numbered from 1 to n from left to right). T…