题面戳我 Solution 板子题 Code //It is coded by ning_mew on 7.25 #include<bits/stdc++.h> #define LL long long using namespace std; const LL MOD=10007; int T; LL A[MOD],B[MOD],n,m; void pre(){ A[0]=B[0]=A[1]=B[1]=1; for(int i=2;i<MOD;i++)B[i]=-(MOD/i)*B[M…
题意:求C(n,m) n,m<=200000000 思路:c(n,m)=c(n mod mo,m mod mo)*c(n div mo,m div mo) mod mo (n>=mo或m>=mo) c(x,y)=0 (x<y) c(n,m)=fac[n]*exf[m]*exf[n-m] (n,m<mo) ; ..]of longint; n,i,x,y:longint; function c(n,m:longint):longint; begin ); if (n<mo…
Problem Description Although winter is far away, squirrels have to work day and night to save beans. They need plenty of food to get through those long cold days. After some time the squirrel family thinks that they have to solve a problem. They supp…
Backbone源码分析(一) Backbone源码分析(二) Backbone中主要的业务逻辑位于Model和Collection,上一篇介绍了Backbone中的Model,这篇文章中将主要探讨Collection的源码. 让我们先来看一下Collection的构造函数: // Create a new **Collection**, perhaps to contain a specific type of `model`. // If a `comparator` is specifie…
Segregate operations that read data from operations that update data by using separate interfaces. This pattern can maximize performance, scalability, and security; support evolution of the system over time through higher flexibility; and prevent upd…
1.1 IntroductionKafka is a distributed streaming platform. What exactly does that mean?kafka是一个分布式的流式平台,它到底是什么意思? We think of a streaming platform as having three key capabilities:我们认为流式平台有以下三个主要的功能: It let's you publish and subscribe to streams of r…
other_techniques_for_regularization 随手翻译,略作参考,禁止转载 www.cnblogs.com/santian/p/5457412.html Dropout: Dropout is a radically different technique for regularization. Unlike L1 and L2 regularization, dropout doesn't rely on modifying the cost function. In…
原文 MICHAEL ROSTON (New York Times) 从左起:木卫二:土卫六:经过火星的水手谷星的合成图:金星的拼接图 大多数人已经从人类第一次近距离看到冥王星的兴奋中冷静下来.下一个任务是什么?在新视野号返回了关于冥王星的照片之际,这个问题就自然浮现出来了.(译者注:新视野号探测器于2006年发射,历时9年,于2015年7月14日,跋涉将近50亿公里后来到冥王星,人类终于完成了太阳系所有行星和矮行星的近距离探测.在探测完海王星后,两位年轻的科学家在电梯里面偶遇当时的NASA的主…