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  • Atcoder Regular Contest 072 C - Alice in linear land(思维题)2021-03-04 22:35:57

    Atcoder 题面传送门 & 洛谷题面传送门 首先求出 \(s_i\) 表示经过 \(i\) 次操作后机器人会位于什么位置,显然 \(s_0=D\),\(s_i=\min(s_{i-1},|s_{i-1}-a_i|)\)。 考虑修改某个位置的 \(a_i\) 的本质是什么。注意到不论你将 \(a_i\) 改为什么值,最终的 \(s_i\) 一定在 \([0,s_{i-1}]\)

  • DFS/BFS+二分学习笔记2021-02-28 09:33:25

    DFS 介绍:深度优先搜索是搜索的手段之一,它从某个状态开始,不断的转移状态直至无法转移,然后不断回到上一个状态,深度优先搜索从最开始的状态出发,遍历所有可以达到的状态.由此可以对所有的状态进行操作,或列举出所有的状态; 例题讲解: 问题: Due to recent rains, water ha

  • [ARC072C]Alice in linear land(dp,贪心)2020-12-27 18:59:04

    [ARC072C]Alice in linear land Description 给定 a 1 . . . a

  • 题解 P2900 【[USACO08MAR]Land Acquisition G】2020-12-05 19:32:00

    在这个地方同时讲一下斜率优化,大佬们就请无视了吧。 注意:一定要看清横纵坐标是什么!!!!!!!! 很容易看出这是一道暴力题,然后我们超时了。 我们想一想该怎么做。 首先容易想到的一个优化便是:如果一片土地的长与宽都少于其他的一片土地,就把他排除。 所以我们先用长(设为x)排个序,假设从小到

  • 1162. As Far from Land as Possible2020-11-27 22:04:21

    package LeetCode_1162 import java.util.* /** * 1162. As Far from Land as Possible * https://leetcode.com/problems/as-far-from-land-as-possible/ * Given an n x n grid containing only values 0 and 1, where 0 represents water and 1 represents land, * f

  • P2900 [USACO08MAR]Land Acquisition G2020-11-04 15:32:01

    洛谷传送门 Solution 发现对于一块土地 \(x\) 和 \(y\) ,如果 \(l_y\geq l_x,h_y\geq h_x\) ,那么把 \(x\) 和 \(y\) 合在一组对答案是不会更劣的。 将土地按照长度和宽度排序,维护一个栈,将有必要存在的土地留下。 在最优决策下,每一组土地都是连续的。因为如果有 \(x,y,z\) 三块连续

  • 【洛谷2900】[USACO08MAR] Land Acquisition G(斜率优化DP)2020-11-02 08:01:02

    点此看题面 有\(n\)块\(a_i\times b_i\)的土地,并购一组土地的代价是\(\max\{a_i\}\times\max\{b_i\}\)。 求买到所有土地的最小代价。 \(n\le5\times10^4\) 预处理 直接\(DP\)是不太好搞的。 考虑我们先给土地按\(a_i\)排个序。 若一块土地\(a_i,b_i\)都比另一块土地小,那么我们

  • Diaoyu Island, Land of Controversy2020-09-09 10:03:00

    The Wall Street Journal Sept 20, 2010【导读】 如果说有哪块土地是最能牵动中日神经的,那就非钓鱼岛莫属了。这块总面积只有 6 平方公里的土地在 2010 年又一次成为中日争端的导火索。China suspended high-level government exchanges with Japan, significantly escalating the

  • 什么是Living off the Land?2020-05-21 11:05:35

    在过去的几年中,Living off the Land一直是网络安全的流行语,但这意味着什么呢?                                                在陆地上生活与耕种无关 近年来,网络犯罪分子使用“Living off the Land”(LotL)策略和工具已成为网络安全领域

  • I Think I Need a Houseboat2020-02-29 19:54:25

    Fred Mapper is considering purchasing some land in Louisiana to build his house on. In the process of investigating the land, he learned that the state of Louisiana is actually shrinking by 50 square miles each year, due to erosion caused by the Mississip

  • VXDIAG VCX NANO for Land Rover and Jaguar Software Download and Installation Instruction2020-01-31 16:01:43

    Jaguar and Land Rover SDD V158 software download link: http://diagnosticdelivery.jlrext.com/idscentral JLR SDD V158 patch download link: https://mega.nz/#!sJUQ2KhB!MlKiLBshYTuFTl7fIYPft_JorBaa0N4N77Ik7NL4urA No password!   SDD 158 installation help: P

  • [洛谷2900][USACO08MAR]土地征用Land Acquisition(斜率优化dp)2020-01-15 14:07:15

    Solution 每块土地的长和宽分别用\(l\)和\(h\)数组表示。 因为一组土地购买的价格 \(=\) 最大的长 \(*\) 最大的宽,所以对于一块土地\(x\),如果存在一块土地\(y\),满足\(l[y]>=l[x]\)且\(h[y]>=h[x]\),那么它只要把土地\(x\)和土地\(y\)合为一组,最大的长可以不取\(l[x]\),最大的宽可以

  • LeetCode 1020. Number of Enclaves2019-11-27 13:03:36

    原题链接在这里:https://leetcode.com/problems/number-of-enclaves/ 题目: Given a 2D array A, each cell is 0 (representing sea) or 1 (representing land) A move consists of walking from one land square 4-directionally to another land square, or off the boundary of

  • 并查集 --cogs456 岛国2019-10-22 17:03:29

    题目链接:http://cogs.pro:8081/cogs/problem/problem.php?pid=pNyNQiqge 思路: 基础是并查集,将两个相邻的岛算作一个集合,每次若合并成功,则N--,最终得到的即为答案。 先按读入岛的x1进行升序排序,然后遍历每个节点,对于节点i,取之后的j,并且要求 j 的x1 <= i 的x2 + 1,之后进行判断 判断内

  • leetcode 463. Island Perimeter2019-09-19 17:55:14

    You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid cells are connected horizontally/vertically (not diagonally). The grid is completely surrounded by water, and there is exactly one island (i

  • ZJU 1037Gird-land2019-09-18 15:53:17

              思路:n和m分别标识横竖的栅栏数目,当两个都为奇数时,那么必有斜边出现,而且在输出时不必考虑浮点数,直接输出小数点后几位即可。 #include<iostream>#include<cstdio>using namespace std;int main(){ int T;cin>>T; while(T--){ int n,m; cin>>n

  • LibGDX重建Flappy Bird——(4) 创建游戏对象2019-09-11 09:03:44

    原文链接:https://my.oschina.net/u/2432369/blog/610412   在本章,我们将为Flappy Bird项目创建一个真正的场景。该游戏场景由几个具有共同属性和功能的游戏对象组成。但是,这些对象被渲染的方式和行为却各有不同, 简单的 对象直接渲染其所分配的纹理,复

  • LeetCode in Python 1020. Number of Enclaves2019-07-17 19:00:21

    Given a 2D array A, each cell is 0 (representing sea) or 1 (representing land) A move consists of walking from one land square 4-directionally to another land square, or off the boundary of the grid. Return the number of land squares in the grid for which

  • G - 炎之箭 (URAL - 1073 )2019-07-03 20:25:06

    There live square people in a square country. Everything in this country is square also. Thus, the Square Parliament has passed a law about a land. According to the law each citizen of the country has a right to buy land. A land is sold in squares, surely

  • Land Rover Aurora 2014 airbag repair using CG100 Pro III2019-06-16 11:04:22

    2014 Land Rover Aurora with airbag NO. DK62-14D374-AG, use CG100 PROG III to repair the airbag without any problem. Car type: 2014 Land Rover AuroraAirbag No: DK62-14D374-AG CG100 Pro III repair airbag on Land Rover Aurora 2014: 1.Check the vehicle.2.The

  • [USACO08MAR]土地征用Land Acquisition2019-06-12 11:04:51

    洛咕 双倍经验 题意:\(N(<=50000)\)块长方形土地,要么单买一块土地,花费为该长方形土地面积,要么并购一组土地,花费为该组长方形土地中最大的长乘上最大的宽,求最小花费. 分析:可能是我语文理解能力不够好,反正我读题的时候没有看出来 这些土地可以不按顺序来买.既然有这个隐含条件

  • HDU-1507-Uncle Tom's Inherited Land*2019-05-15 19:49:15

    链接:https://vjudge.net/problem/HDU-1507 题意: Your old uncle Tom inherited a piece of land from his great-great-uncle. Originally, the property had been in the shape of a rectangle. A long time ago, however, his great-great-uncle decided to divide the land i

  • 【转载】学习可能用到的英语单词2019-04-09 09:54:09

        conjectural—based on guessing 推测的-给予猜测的   consciously—on purpose 有意识地-有目的地   conserve—retain保存-保存  conspicuous—noticeable明显的-明显的   constituent—component组成部分-成分     crucial—essential重要的,关键的-重要的,

  • 【转载】学习可能用到的英语单词2019-04-09 09:42:01

        conjectural—based on guessing 推测的-给予猜测的   consciously—on purpose 有意识地-有目的地  conserve—retain保存-保存  conspicuous—noticeable明显的-明显的  constituent—component组成部分-成分    crucial—essential重要的,关键的-重要的,基本的

  • P2900 [USACO08MAR]土地征用Land Acquisition(斜率优化)2019-03-28 19:53:12

    题目描述 Farmer John is considering buying more land for the farm and has his eye on N (1 <= N <= 50,000) additional rectangular plots, each with integer dimensions (1 <= width_i <= 1,000,000; 1 <= length_i <= 1,000,000). If FJ wants to buy

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