处理的时候就是让list[i] - i,这样就得到了最长不下降子序列,非正数就赋成INF忽略不计,就可以算了,见到大佬门用upper_bounder算的,不太会 我就用权值线段树动态开点写了这个题,转换成最长不下降子序列最重要!!! 具体看代码,不好写但是原理很简单 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
没错,就是序列长度减去最长上升子序列的数量 然而还有一个问题,最长上升子序列的某两个元素大小可能是相邻的, 但是对应到原序列中,可能这两个元素之间可能还有别的元素,这样就无法修改中间元素了 这里有一个小trick(看题解才明白): 如果最后a[i]a[i]是严格单调增的,那么a[i]−ia[i]−i一定是不降的, ...
What is the minimum number of moves needed to make bb increasing (that is, every element is strictly greater than every element before it)? The first line contains a single integer nn (2≤n≤50002≤n≤5000). The second line contains nn integers, a1a1, a2a2, ..., anan (1≤ai≤1091...
B. Make It Increasing 给一个数列,每次操作把一个位置整除2 ,最少操作多少次使得数列严格递增? 从后往前倒推,答案是固定的,一直做到符合要求即可。 int a[57]; inline void work() { int n = rd(), ans = 0; for (int i = 1; i <= n; ++i) a[i] = rd(); for (int i = n - 1;...
1 6 2 5 3 4 We will Divide to 1 6 2 5 3 4 Now because its add so the order doesn't matter How to make it increasing if we add 6 after 6 we will guarantee that every number after 6 is greater than 6 and go to the next sub segment and add 5 after 5 and so on So the...
1882A-IncreasingSequence.cpp 1882B-SetsAndUnion.cpp 1883A-Morning.cpp 1883B-Chemistry.cpp 1883C-Raspberries.cpp 1884A-SimpleDesign.cpp 1884B-HauntedHouse.cpp 1886A-SumOfThree.cpp 1886B-FearOfTheDark.cpp 1890A-DoremysPaint3.cpp 1890B-QingshanLovesStrings.cpp 1891A-SortingWithTwos.cpp 1891B-De...
B. Make It Increasing codeforces.com/contest/ 给你一个序列 a,一次操作可以让一个 ai 变成⌊ai2⌋,问最少多少次操作可以让原序列严格单调增加。反向考虑 如果ai<ai−1, 那么我们就要操作对 ai−1 进行操作,我们需要找到一个最小的整数 k ...
Codeforces. Programming competitions and contests, programming community
Make It Increasing https://codeforces.com/contest/1437/problem/E 题意:给定一个长度为n的序列a。当元素i不属于集合b时,序列中的ai可以更改为任意值。问:让序列变成严格递增的序列所需要的最小操作次数。 思路: 1、首先,当a[i]、a[j]值固定且 i − j > a [ i ] − a [ j ] ( i > j...
1230C-AnadiAndDomino.cpp 1231C-IncreasingMatrix.cpp 1234A-EqualizePricesAgain.cpp 1234B1-SocialNetworkEasyVersion.cpp 1234B2-SocialNetworkHardVersion.cpp 1234C-Pipes.cpp 1234D-DistinctCharactersQueries.cpp 1236A-Stones.cpp 1236B-AliceAndTheListOfPresents.cpp ...