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 ...
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 #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++) scanf("%d",...
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 = 5...
【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 451B Sort the Array(水题) 题目连接:Codeforces 451B Sort the Array 题目大意:给出一个长度为n的序列,可以有一次机会旋转a[l]到a[r]之间的数,问说可否形成一个递增序列。 解题思路:将数组排下序,然后从前向后,从后向前寻找不同到位置,这段l~r是一定要旋转的,然后判断旋转后的符不符合递增...
【Codeforces 258B】 Sort the Array 【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;boolflag;...
Sort Array By Parity 116 0 0 LightOf | Perl Codeforces 1312E. Array Shrinking(区间DP 栈) Codeforces 1312E. Array Shrinking(区间DP 栈) 116 0 0 jasmine_qiqi 4.1、Array数组常用的方法(map、push、sort、filter、join、split) 4.1、Array数组常用的方法(map、push、sort、filter、join、...
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 ...
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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...