Unfortunately, the size ofais too small. You want a bigger array! Your friends agree to give you a bigger array, but only if you are able to answer the following question correctly: is it possible to sort the arraya(in increasing order) by reversingexactly onesegment ofa? See definitions ...
http://codeforces.com/contest/451/problem/B 【算法】 模拟 在序列中找到一段单调递增的子序列,将这段序列反转,然后判断序列是否变得单调递增,即可 【代码】 #include<bits/stdc++.h>usingnamespacestd;constintMAXN = 1e5 +10;inti,n,l,r;boolflag;inta[MAXN];intmain() { scanf("%d",&n);for(i ...
解析:从前往后找第一个不符合位置的,从后往前找,找到第一个不符合的位置,然后就翻转这一段,判断反转后的结果是否为升序序列 AI检测代码解析 #include <bits/stdc++.h> using namespace std; const int maxn = 1e5+1000; int a[maxn]; int main(void) { int n; cin>>n; for(int i=0;i<n;i++...
【模拟】【codeforces】451B Sort the Array http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=52107 给出一个数列,问截取哪一部分连续子列进行翻转可以使整个数列升序排列, 如果有这样的字串输出yes和截取位置,没有输出no 就是先记录原始位置进行排序,之后一旦发现一个元素排序后更改了位置那它就被...
【Codeforces 258B】 Sort the Array i++ 【题目链接】 http://codeforces.com/contest/451/problem/B 【算法】 模拟 在序列中找到一段单调递增的子序列,将这段序列反转,然后判断序列是否变得单调递增,即可 【代码】 #include<bits/stdc++.h>usingnamespacestd;constintMAXN = 1e5 +10;inti,n,l,r;bool...
I just find this problem but couldn't think of a solution ??can anyone will help me?? given N and K (2 <= N,K <= 8) and an array consisting of N distinct elements; in one move you can pick a block of K elements in the array and reverse the order, for example: if N = ...
Then if you reverse a1 to ai, you have the smallest element of a at a1. Again, find the smallest among a2 to an and reverse a2 to ai to bring the 2nd smallest to the 2nd position... and so on... UPD: This will sort the array using exactly n reverses. Minimum number of ...
Sort Colors Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the in...Sort Colors Sort Colors 题目大意 给你一个数组,不同的数字代表不同颜色,将...
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\(Solution\) 对属性为\(r2\)的有多少个点分类讨论. 若\(\leq\sqrt n\),在每个点处暴力CDQ分治总结(CDQ,树状数组,归并排序) 闲话CDQ是什么? 是一个巨佬,和莫队.HJT(不是我这个蒟蒻)一样,都发明出了在OI中越来越流行的算法/数据结构. CDQ分治思想 分治就是分治,"分而治之"的思想. 那为什么会有CDQ...