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全部文章（共93篇）

A. Ivan the Fool and the Probability Theory

https://codeforces.com/contest/1239/problem/A discription given a \(n*m\) field in which every grid can be painted black and white. count the number...

2020-03-21

0 232

Balanced Domino Placements from Codeforces Global Round 5

https://codeforces.com/contest/1237/problem/F key to come up with solution is that we need to realize the importance of iterating two kinds of domino...

2020-03-21

0 285

换根dp

https://codeforces.com/contest/1324/problem/F description you are given a tree, in which the vertices are all printed either black or white. , find ...

DP

2020-03-17

0 197

writing: learn to write thesis statement

One kind of a little bit pessimistic truths is that our life is companied with Stressors from time to time, among which catching the deadline, facing ...

2020-03-16

0 211

cow and treats

https://codeforces.com/problemset/problem/1307/E first insight consideration of orders is needless 不需要考虑牛吃草的顺序.首先，如果能确定合法的顺序，则不同种类的牛相互之间一定不会冲突，因为他们...

2020-03-16

0 274

论文行文分析

觉得这篇论文写得真好，真正做到行文流畅内容详实，对我来说如同教科书般，于是将一些细节放了出来，多少有点收获吧。这还只是行文部分，什么时候有能力剖析他的内容，理解他的核心理念，我也算达到初步入门实践的境界了（笑）摆线推进器的无人监测船系统研究 ——浙江大学研究背景与意义 ...

2020-03-15

0 259

逆元与组合数

int add(int a,int b) { int c=(a+b); if (c>=mod) c-=mod; return c; } int mul(int a,int b) { ll c=1ll*a*b; return c-c/mod*mod; } int fpow(int x,...

数学

2020-03-14

0 212

c++lambda

https://blog.csdn.net/xiaoguyin_/article/details/79798362?depth_1-utm_source=distribute.pc_relevant.none-task&utm_source=distribute.pc_relevant.no...

2020-03-12

0 259

数位dp

//https://www.luogu.com.cn/problem/P2657 #include <bits/stdc++.h> #pragma GCC diagnostic error "-std=c++11" #define SIS std::ios::sync...

DP

2020-03-09

0 229

delay

a glance at neural networks and deep learning by Michael Nielsen http://www.liuxiao.org/wp-content/uploads/2016/10/nndl-ebook.pdf todo loss function...

2020-03-09

0 177