Codeforces Round #335 (Div. 2) C. Sorting Railway Cars
来源:互联网 发布:java上传文件到本地 编辑:程序博客网 时间:2024/06/05 01:53
An infinitely long railway has a train consisting of n cars, numbered from 1 to n (the numbers of all the cars are distinct) and positioned in arbitrary order. David Blaine wants to sort the railway cars in the order of increasing numbers. In one move he can make one of the cars disappear from its place and teleport it either to the beginning of the train, or to the end of the train, at his desire. What is the minimum number of actions David Blaine needs to perform in order to sort the train?
The first line of the input contains integer n (1 ≤ n ≤ 100 000) — the number of cars in the train.
The second line contains n integers pi (1 ≤ pi ≤ n, pi ≠ pj if i ≠ j) — the sequence of the numbers of the cars in the train.
Print a single integer — the minimum number of actions needed to sort the railway cars.
54 1 2 5 3
2
44 1 3 2
2
In the first sample you need first to teleport the 4-th car, and then the 5-th car to the end of the train.
解题报告:Codeforces Round #335 Problem Analysis
题意
给你1-n的一个排列
然后你的操作是可以把一个数放到结尾或者首部
然后问你最少多少次操作,可以将这个排列变成递增的
题解:
首先跑最长上升子序列是错的
比如 1 2 4 5 3
最长上升子序列答案跑出来是1
但实际上答案是2
所以只能跑严格只比之前大1的子序列就好了
- Codeforces Round #335 (Div. 2) C.Sorting Railway Cars
- Codeforces Round #335 (Div. 2) C. Sorting Railway Cars
- Codeforces Round #335 (Div. 2)C. Sorting Railway Cars
- Codeforces Round #335 (Div. 2) 605A Sorting Railway Cars
- Codeforces Round #335 (Div. 2) C. Sorting Railway Cars 最长连续上升子序列
- Codeforces Round #335 (Div. 2) 606C Sorting Railway Cars(hash)
- Codeforces Round #335 (Div. 2)-C Sorting Railway Cars(最长上升子序列)
- Codeforces Round #335 (Div. 1) A. Sorting Railway Cars
- Codeforces Round #335 (Div. 2)-Sorting Railway Cars(求连续的上升序列的最大值)
- codeforces 335 C Sorting Railway Cars
- 【Codeforces Round 335 (Div 2) C】【贪心 脑洞 有趣排序】Sorting Railway Cars 全排列排序可以提前后提后的最小操作数
- codeforces C. Sorting Railway Cars 贪心
- Codeforces 606 C Sorting Railway Cars【思维】
- Codeforces 606 C Sorting Railway Cars
- CF 335 div.2-C/div.1-A/605A Sorting Railway Cars
- C - Sorting Railway Cars
- C. Sorting Railway Cars
- CodeForces 606C--Sorting Railway Cars,思路题~~~
- Android Studio安装
- Android APP登录界面设计
- 求字符串所有的排列方式
- BZOJ-1189 紧急疏散evacuate BFS预处理+最大流+二分判定+神建模!!
- 讨论一下你们心目中的最优秀的Ajax框架是什么?
- Codeforces Round #335 (Div. 2) C. Sorting Railway Cars
- Codeforces Round #335 (Div. 2) B. Testing Robots
- iOS 自定义cell侧滑删除、编辑等按钮
- #Objective - C - UI-design - 第五天 -UIKit框架-UIKit-Catalog-UIControl
- linux 添加用户、权限
- nyoj999
- 组播技术
- 实现折叠的uitableviewcell效果
- iOS中UIStackView相关属性理解