Hi guys, this is my first blog on Codeforces. So if there were any mistakes or suggestions, feel free to correct me down in the comment section. Anyway, I discovered a nice way to solve static range query probl
then T(n) cannot be less. So if we want to prove that T(n)=O(n/log n), then it is sufficient to prove that for some constant c:T(n)<=cn/log n. Let's try to do this by
题解: 线段树 + divide and conquer #include"stdafx.h"#include<iostream>#include<cstdio>#include<cstring>#include<algorithm>#include<vector>#include<stack>usingnamespacestd;constintN=200005;intp[N],sz[N],ans[N];structNode{intx,ansy;};stack<Node>s;intfind(intx){while(x!=p[x]){x=p[x...
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The11-st traveler and the22-nd traveler both go through the edge6−86−8. The11-st traveler and the33-rd traveler both go through the edge2−62−6. The11-st traveler and the44-th traveler both go through the edge1−21−2 and2−62−6. ...
给定n个数ai,ai<=2^60 将这n个数进行以下操作。 选择第k个位置1<=k<n,令x=a1^a2^...^ak,y=a[k+1]^a[k+2]^...^a[n] 如果x>y,保留a1,a2,...,ak 如果x<y,保留a[k+1],a[k+2],...,a[n] 如果x==y,保留前面或者后边都可。
HDU 6882 Divide and Conquer(二分) 题面 使用两条相交直线平分n个点,使得每块区域都包含n4个点,保证n%4≡0使用两条相交直线平分n个点,使得每块区域都包含n4个点,保证n%4≡0 Solution 首先我们可以明确此题一定是有解的,所以我们可以首先固定一条平分线再去寻找第二条平分线,那么第一条平分线我们可以通过...
#601 Andryusha and Socks #602 Sorting with Twos #603 Find Array #604 Between the Offices #605 Exponential Equation #606 Two Subsequences #607 Divide and Conquer #608 Data Center #609 Broken Keyboard #610 MEXanized Array #611 Array Rearrangment #612 Elevator or Stairs #613 Kevin and Permut...
Codeforces #2023D. Divide OR Conquer(dp,扫描线) TurboChemtank 赤峰学院ACM社团主席 2 人赞同了该文章 题目链接 题意 给你一个数组 [a1,a2,…an] ,由 0 和109 之间的整数组成。您必须将这个数组分割成几个数段(可能是一个),使每个元素都正好属于一个数段。 假设第一段为数组 [al1,al1+1,…,ar...
cdq 分治难度:3 前提:分治II 后继: 资料: 习题: BZOJ 1176. [Balkan2007]Mokia BZOJ 2527. [Poi2011]Meteors HDU 4742. Pinball Game 3D Codeforces Round #276 Div1. Problem E. Sign on Fence HDU 3842. Machine Works Posted by xiaodao Category: 算法 Tags: 坑...