最小生成树 Kruskal #include<cmath> #include<iostream> #include<cstdio> #include<algorithm> using namespace std; struct A{ int x,y; double z; }a[500010]; int r[755]; int find_(int x) { while(x!=r[x]) x=r[x]; return x; } int cmp(A a,A b)…

uvaoj 10397 - Connect the Campus Many new buildings are under construction on the campus of the University of Waterloo. The university has hired bricklayers, electricians, plumbers, and a computer programmer. A computer programmer? Yes, you have been…

题意:给出n个点的坐标,要把n个点连通,使得总距离最小,可是有m对点已经连接,输入m,和m组a和b,表示a和b两点已经连接. 思路:两种做法.(1)用prim算法时,输入a,b.令mp[a][b]=0.然后进行一遍prim(2)Kruskal算法+并查集 代码: //prim写法 #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <…

题目 Volume 0. Getting Started 开始10055 - Hashmat the Brave Warrior 10071 - Back to High School Physics 10300 - Ecological Premium 458 - The Decoder 494 - Kindergarten Counting Game 414 - Machined Surfaces 490 - Rotating Sentences 445 - Marvelous Mazes…

解题报告 题目传送门 题意: 使得学校网络互通的最小花费,一些楼的线路已经有了. 思路: 存在的线路当然全都利用那样花费肯定最小,把存在的线路当成花费0,求最小生成树 #include <iostream> #include <cstdio> #include <cstring> #include <cmath> #define inf 0x3f3f3f3f using namespace std; int n,m,_hash[1110][1110],vis…

Cellular Network Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVA 1456 A cellular network is a radio network made up of a number of cells each served by a base station located in the cell. The base sta…

https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=251  Network  A Telephone Line Company (TLC) is establishing a new telephone cable network. They are connecting several places numbered by integers…

Young naturalist Bill studies ants in school. His ants feed onplant-louses that live on apple trees. Each ant colony needsits own apple tree to feed itself.Bill has a map with coordinates of n ant colonies and napple trees. He knows that ants travel…

POJ 1511 Invitation Cards / UVA 721 Invitation Cards / SPOJ Invitation / UVAlive Invitation Cards / SCU 1132 Invitation Cards / ZOJ 2008 Invitation Cards / HDU 1535 (图论,最短路径) Description In the age of television, not many people attend theater perfor…

uva 1411 Ants Description Young naturalist Bill studies ants in school. His ants feed on plant-louses that live on apple trees. Each ant colony needs its own apple tree to feed itself. Bill has a map with coordinates of n ant colonies and n apple tre…