something wrong with my new blog! I can't type matrixs so I come back. qwq 题目:https://www.codechef.com/problems/BIKE 题解 是我naive了,二维和一维其实差不多 首先,n很小,t很大,什么算法?矩阵乘法!没跑了 然后矩阵里填什么?一条边是两个值啊,还要一个%n一个%(n - 1),怎么搞 我们设计一个多项式\(x^{a}y^{b}\),x指数(也就是a)代表前轮加上一条边的值后取
原文链接:https://blog.csdn.net/a19990412/article/details/87262531 扩展学习:https://www.sciencedirect.com/topics/mathematics/interpolation-polynomial This example demonstrates how to approximate a function with a polynomial of degree n_degree by using rid
这样几行简单的代码创建一个web服务器: var express = require('express'); var app = express(); var server = require('http').Server(app); var bodyParser = require('body-parser'); app.use(bodyParser.json({limit: '10mb', extended: true})); 然后使用app.post("/getSimilarImage&q
https://www.luogu.org/problemnew/show/P4948 这篇博客主要目的是存一下的dls的神奇板子,本来应该是推公式或者二分做的 但是dls的插值板子直接写好了这个特殊式子的算法...... #include <bits/stdc++.h> #define endl '\n' #define ll long long #define ull unsigned long long #define fi first #define se second #define
给一个树,每个点的权值为正整数,且不能超过自己的父节点,根节点的最高权值不超过D 问一共有多少种分配工资的方式? 题解: A immediate simple observation is that we can compute the answer in $O(nD) $with a simple dynamic program. How to speed it up though? To speed it up, we need the following lemma. Lemma 1: F