原创 -----揹包 DP hdu 5119- Happy Matt Friends
Matt has N friends. They are playing a game together. Each of Matt’s friends has a magic number. In the game, Matt
2020-06-23 22:47:54
原创 ----- UVA 11624-Fire!
Joe works in a maze. Unfortunately, portions of the maze have caught on fire, and the owner of the maze neglected
2020-06-23 22:47:43
原创 Vim編輯器常用指令
- 基本模式 命令模式:所有按鍵都代表命令 插入模式:輸入的東西都成爲文件的內容 vim + 文件名: 打開後光標定位到最後一行 vim +3 文件名: 打開後光標定位到第三行 vim +/imooc 文件名: 定位到imooc出現的第
2020-06-23 22:47:43
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原创 -----找規律 ZOJ 3829-Known Notation
Do you know reverse Polish notation (RPN)? It is a known notation in the area of mathematics and computer science.
2020-06-23 22:47:43
原创 -----FZU 2150-Fire Game
Fat brother and Maze are playing a kind of special (hentai) game on an N*M board (N rows, M columns). At the beginn
2020-06-23 22:47:42
原创 -----尺取法 hdu 6103-Kirinriki
Problem Description We define the distance of two strings A and B with same length n is disA,B=∑i=0n−1|Ai−Bn−1−i|
2020-06-23 22:47:42
原创 -----概率DP ZOJ 3822- Domination
Edward is the headmaster of Marjar University. He is enthusiastic about chess and often plays chess with his friend
2020-06-23 16:44:13
原创 Http&Https
Http&Https 什麼是協議？ 計算機之間爲了實現網絡通信而達成的一種“約定”或者“規則”。 HTTP協議是什麼？ 超文本傳輸協議,它是從WEB服務器傳輸超文本標記語言(HTML)到本地瀏覽器的傳送協議。HTPP有多個版
2020-03-27 16:20:05
原创 密碼安全性
## 讀書筆記之 <<密碼安全性>> ### 什麼是密碼哈希？ - 哈希算法: 將任何數量的數據轉換爲無法反轉的固定長度的“指紋”(即使輸入的變化很小，但生成的哈希值將完全不同)。 用於實現諸如哈希表之類的數據結構的哈希函數被設計
2020-03-06 17:39:04
原创 -----暴力dfs+回溯 hdu 1045-Fire Net
Suppose that we have a square city with straight streets. A map of a city is a square board with n rows and n colum
2020-02-20 20:19:58
原创 -----染色問題 hdu 5971-Wrestling Match
Nowadays, at least one wrestling match is held every year in our country. There are a lot of people in the game is
2020-02-20 20:19:58
原创 -----區間DP 石子的合併
石子合併 時間限制：1000 ms | 內存限制：65535 KB 難度：3 描述 有N堆石子排成一排，每堆石子有一定的數量。現要將N堆石子併成爲一堆。合併的過程只能每次將相鄰的兩堆石子堆成一堆，每次合併花費的代
2020-02-20 20:19:47
原创 ------區間DP hdu 5115 - Dire Wolf
Dire wolves, also known as Dark wolves, are extraordinarily large and powerful wolves. Many, if not all, Dire Wolve
2020-02-20 20:19:47
原创 -----dfs+思維 hdu 6060-RXD and dividing
http://acm.hdu.edu.cn/showproblem.php?pid=6060 傳送門 題目大意： 有一棵樹T,n個點，n-1條邊；將2,3,4,5,6，… n分到k個集合裏面S1，S2，S3，… Sk；集合可以是
2020-02-20 20:19:47
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原创 -----廣搜 POJ 3278-Catch That Cow
Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a
2020-02-20 20:19:47