Here is the template:- #include<bits/stdc++.h>usingnamespacestd;classSegmentTree{private:std::vector<int>st,A;vector<int>lazy;intn;public:SegmentTree(vector<int>&a){A=a;n=a.size();st.assign(4*n+1,0);// Max 4n nodes requiredlazy.assign(4*n+1,0);// Max 4n nodes requiredbuild...
I've made some simple memes about segment trees usingimgflip templates. I need your help to create some more original ones, maybe based on your personal experiences at competitions, craziest problems involving segtree, famous people from CF using segtree etc.! Maybe your's will be more fun...
code: Codeforces 1290 E /*program by mangoyang*/#pragmaGCC optimize("Ofast","inline")#include<bits/stdc++.h>#defineinf (0x7f7f7f7f)#defineMax(a, b) ((a) > (b) ? (a) : (b))#defineMin(a, b) ((a) < (b) ? (a) : (b))typedeflonglongll;usingnamespacestd;template<class...
BZOJ 3489: A simple rmq problem(K-D Tree) 编程算法 因为是OJ上的题,就简单点好了。给出一个长度为n的序列,给出M个询问:在[l,r]之间找到一个在这个区间里只出现过一次的数,并且要求找的这个数尽可能大。如果找不到这样的数,则直接输出0。我会采取一些措施强制在线。
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The 'science' of training in competitive programming - Codeforces, by Thanh Trung Nguyen (I_love_Hoang_Yen) If you ask me how to improve your algorithm competition skill, I will give you the link of this blog. - Codeforces, by Huang I-Wen (dreamoon) ...
https://codeforces.com/contest/1278/problem/D 题意: As the name of the task implies, you are asked to do some work with segments and trees. Recall that a tree is a connected undirected graph such that there is exactly one simple path between every pair of its vertices. ...
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template<typename T, typename...Args> void err(T a, Args...args) { std::cout << a << ' '; err(args...); } #else #define dbg(...) #endif using namespace std; typedef long long ll; typedef pair<int, int> pii; //head ...
Data Structures - Segment Tree 学习了下一种新的数据结构,segment tree 主要看这篇文章: http://www.geeksforgeeks.org/segment-tree-set-1-sum-of-given-range/ 看完之后就基本清楚了。 说说他的应用场景。 假设给你一个array,有两个函数, 一个是, int sum(int i, int j) 给出 index i-j 的...