Decoding of Varints Statements Varint is a type used to serializing integers using one or more bytes. The key idea is to have smaller values being encoded with a smaller number of bytes. First, we would like to encode some unsigned integer x. Conside…

Decoding of Varints ​ 题意&思路: 首先根据红色边框部分的公式算出x,再有绿色部分得知,如果x是偶数则直接除以2,x是奇数则(x+1)/-2. PS:这题有数据会爆掉unsigned long long,就是在最后奇数转换的时候.所以转换的时候可以变公式为-((x-1)/2+1).​ 代码: #include <iostream> #include <queue> #include <cstdio> #include <algorit…

A. Advertising Strategy 最优策略一定是第一天用$y$元,最后一天再用$x-y$元补满. 枚举所有可能的$y$,然后模拟即可,天数为$O(\log n)$级别. 时间复杂度$O(x\log n)$. #include<cstdio> typedef long long ll; const ll inf=1LL<<60; ll min(ll a,ll b){return a<b?a:b;} ll cal(ll n,ll x,ll o){ ll ans=1;…

Packages   Standard library Other packages Sub-repositories Community Standard library ▾ Name Synopsis archive   tar Package tar implements access to tar archives. tar包实现了tar格式压缩文件的存取. zip Package zip provides support for reading and writing ZIP arch…

Packages   Standard library Other packages Sub-repositories Community Standard library Name Synopsis archive   tar Package tar implements access to tar archives. zip Package zip provides support for reading and writing ZIP archives. bufio Package buf…

Problem D"Decoding Task" Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100002 Description In the near future any research and publications about cryptography are outlawed throughout the world on the grounds of national se…

Protocol Buffer技术详解(数据编码) - Stephen_Liu - 博客园 https://www.cnblogs.com/stephen-liu74/archive/2013/01/08/2845994.html Posted on 2013-01-08 08:52 Stephen_Liu 阅读(16562) 评论(2) 编辑 收藏 之前已经发了三篇有关Protocol Buffer的技术博客,其中第一篇介绍了Protocol Buffer的语言规范,而后两篇则分别基于C++和…

Block Markov coding在一系列block上进行.在除了第一个和最后一个block上,都发送一个新消息.但是,每个block上发送的码字不仅取决于新的信息,也跟之前的一个或多个block上的信息有关.所以,称为Markov encoding.之前blocks上的信息,可以是之前消息提取的信息,也可以是其他用户的合作信息. Non-Markov coding,每个block的码字只取决于现在的消息,相应地,接收机只利用当前block的消息译码. 非规则编码和连续译码首先在中继信道中提…

 Gym 101047M Removing coins in Kem Kadrãn Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output Andréh and his friend Andréas are board-game aficionados. They know many of their friend…

 Gym 101047K Training with Phuket's larvae Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output Thai cuisine is known for combining seasonings so that every dish has flavors that are…