作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 Kruskal算法 日期 题目地址:https://leetcode-cn.com/problems/connecting-cities-with-minimum-cost/ 题目描述 There are N cities numbered from 1 to N. You are given connections, where each conne…

keyence2019_e $N$ 个节点的无向图 $G$,节点 $i,j$ 之间的边权值为 $|i - j| \times D + A_i + A_j$ . 求最小生成树(Minimum Spanning Tree, MST)的权值. 数据范围 $1 \leq N \leq 2 \times 10^5$ $1 \leq D \leq 10^9$ $1 \le A_i \le 10^9$ $A_i$ and $D$ are integers. From the editorial: We wan…

原题链接在这里:https://leetcode.com/problems/connecting-cities-with-minimum-cost/ 题目: There are N cities numbered from 1 to N. You are given connections, where each connections[i] = [city1, city2, cost] represents the cost to connect city1 and city2together…

A - Beginning 签到. #include <bits/stdc++.h> using namespace std; int main() { ]; while (scanf("%d", a) != EOF) { ; i < ; ++i) scanf("%d", a + i); sort(a, a + ); ; ; i < ; ++i) res = res * + a[i]; puts(res == ? "YES"…

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=4126 Genghis Khan the Conqueror Time Limit: 10000/5000 MS (Java/Others)Memory Limit: 327680/327680 K (Java/Others) 问题描述 Genghis Khan(成吉思汗)(1162-1227), also known by his birth name Temujin(铁木真) and templ…

目录 Catalog Solution: (有任何问题欢迎留言或私聊 && 欢迎交流讨论哦 Catalog Problem:  Portal: hdu4126 hdu4756  原题目描述在最下面. 第一题:  给定一张n(3000)个点的图,q次询问,每次询问增大一条边的权值后最小生成树的值是多少,求答案期望. 第二题:  给定一张n(1000)个点的图,某两个点间的边可能不存在,问各种情况最小生成树的最大值. Solution:  第一题用的\(kruskal\),第二题用的\(pri…

Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 327680/327680 K (Java/Others) Total Submission(s): 2524    Accepted Submission(s): 760 Problem Description Genghis Khan(成吉思汗)(1162-1227), also known by his birth name Temujin(铁木真) and temple na…

目录 二分查找 排序的写法 BFS的写法 DFS的写法 回溯法 树 递归 迭代 前序遍历 中序遍历 后序遍历 构建完全二叉树 并查集 前缀树 图遍历 Dijkstra算法 Floyd-Warshall算法 Bellman-Ford算法 最小生成树 Kruskal算法 Prim算法 拓扑排序 双指针 动态规划 状态搜索 贪心 本文的目的是收集一些典型的题目,记住其写法,理解其思想,即可做到一通百通.欢迎大家提出宝贵意见! 博主有算法题解的微信公众号啦,欢迎关注「负雪明烛」,持续更新算法题的解题思路…

http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1116 1116: Kingdoms Time Limit: 3 Sec  Memory Limit: 64 MBSubmit: 293  Solved: 82[Submit][Status][Web Board] Description A kingdom has n cities numbered 1 to n, and some bidirectional roads connecting…

This is the first time I took part in Codeforces Competition.The only felt is that my IQ was contempted.The problem in Div2 was so...em,how to say,anyway I even daren't to believe.Yesterday I solved two fifths of problems.You see? I'm just a guy full…