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Roads
HDU - 1102 - Constructing
Roads
(最小生成树--prim算法!!)
ConstructingRoadsTimeLimit:2000/1000MS(Java/Others)MemoryLimit:65536/32768K(Java/Others)TotalSubmission(s):14890AcceptedSubmission(s):5674ProblemDescriptionThereareNvillages,whicharenumberedfrom1toN,a
zzuspy
·
2020-08-03 05:53
~~~~~~~~~~图论
生成树
~~~~~~~~~~数据结构
HDU
POJ 2421 Constructing
Roads
(简单最小生成树)
POJ2421ConstructingRoads(简单最小生成树)http://poj.org/problem?id=2421题意:有N个点的无向图,给了你该图的距离矩阵.且其中一些点已经连接起来了,现在要你求让该无向图连通,你需要添加边的总长度最少是多少?分析:将已经连通的边看成是长度为0的边,然后用Kruskal算法处理即可.完全图,一定存在最小生成树.AC代码:#include#includ
focus_best
·
2020-08-03 05:08
ACM--题解汇总
★★
图论--最小生成树
practice
again
POJ 1251 Jungle
Roads
(最小生成树简单题)
POJ1251JungleRoads(最小生成树简单题)http://poj.org/problem?id=1251题意:N个顶点的无向图,给你每条边的长度,要你求该图的最小生成树.其中每个点用大写字母A-Z表示.分析:直接kruskal模板即可,转换输入格式.注意输入中的边没有重复边,所以无需判重.AC代码:#include#include#includeusingnamespacestd;co
focus_best
·
2020-08-03 05:08
图论--最小生成树
ACM--题解汇总
★★
practice
again
poj 2421Constructing
Roads
题目链接:http://poj.org/problem?id=2421题目思路:这道题很简单,就是把给出的已有的道路之间的值换为零就可以了AC代码:#include#defineinf0xfffffffintmap[105][105],n;voiddisjka(){intcur=1,next,i,j,m=n;intvis[105]={0},dis[105];for(i=1;i<=n;i++)dis
黑山老猴妖
·
2020-08-03 05:55
poj 2421 Constructing
Roads
(最小生成树 kruskal算法)
ConstructingRoadshttp://poj.org/problem?id=2421TimeLimit:2000MSMemoryLimit:65536KTotalSubmissions:19457Accepted:8103DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuch
defense881
·
2020-08-03 05:24
poj
ACM_图论
图
ACM之解题报告
POJ-2421 Constructing
Roads
ConstructingRoadsTimeLimit:2000MSMemoryLimit:65536KDescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBare
J_Sure
·
2020-08-03 05:20
Prim
ACM-POJ
I - Constructing
Roads
DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAandB,orthe
不满de奶瓶
·
2020-08-03 05:47
并查集
最小生成树
【POJ】[1251]Jungle
Roads
知道是最小生成树都懒得再一句一句翻译题目了……由题目描述这里用Prim更好一些因为村庄数比较少……吐槽一下现在见多了英语还真是好多了扫一下还真能差不多看懂这里使用数组然后字符减’A’的形式直接来储存另外这里的输入数据涉及到字符空格换行什么的有点坑……嗯……应该说很坑……算法一点没问题……卡在输入数据动弹不得……舍本逐末嘛!#include#includeusingnamespacestd;intm
BoilTask
·
2020-08-03 05:45
POJ
最小生成树
D - Constructing
Roads
ThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAandB,orthereexistsavi
曾經的過去
·
2020-08-03 04:13
POJ 2421 Constructing
Roads
(最小生成树,边已经存在的处理方法)
ConstructingRoadsTimeLimit:2000MSMemoryLimit:65536KTotalSubmissions:22483Accepted:9606DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnect
Shyazhut
·
2020-08-03 04:14
POJ
最小
最大
次小生成树
POJ - 2421 Constructing
Roads
(最小生成树简单应用)
题意:一些点已经连通,还有一些未连通,求所有的点连通,需要的代价。题解:最小生成树模板题,先根据邻接矩阵把边都存起来,然后把已经相邻的边权为0,再存起来。跑一遍kk,这些边权为0的肯定把刚才邻接表存进去的给覆盖(用不到他们)了!#include#include#include#include#include#include#include#include#include#include#inclu
Soar-
·
2020-08-03 04:41
图论-------最小生成树
POJ - 2421 Constructing
Roads
(最小生成树 prim)
ThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAandB,orthereexistsavi
蝉鸣的夏季
·
2020-08-03 04:57
ACM-图论
Constructing
Roads
(第12次h题)
ConstructingRoads问题链接http://poj.org/problem?id=2421DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBare
qq_43993717
·
2020-08-03 04:03
POJ - 2421 Constructing
Roads
【prim】
ConstructingRoadsTimeLimit:2000MSMemoryLimit:65536KTotalSubmissions:28912Accepted:12823DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnec
黑糖22
·
2020-08-03 04:02
【Jungle
Roads
】【POJ - 1251】(最小生成树)
题目:TheHeadElderofthetropicalislandofLagrishanhasaproblem.Aburstofforeignaidmoneywasspentonextraroadsbetweenvillagessomeyearsago.Butthejungleovertakesroadsrelentlessly,sothelargeroadnetworkistooexpensi
洋-葱
·
2020-08-03 03:56
图论
hdu1301:Jungle
Roads
(最小生成树)
http://acm.hdu.edu.cn/showproblem.php?pid=1301ProblemDescriptionTheHeadElderofthetropicalislandofLagrishanhasaproblem.Aburstofforeignaidmoneywasspentonextraroadsbetweenvillagessomeyearsago.Butthejungl
张宜强
·
2020-08-03 03:23
最小生成树
hdu
hdu刷题记录
Constructing
Roads
(Kruskal)
ProblemDescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAand
cjmHK
·
2020-08-03 03:57
HDU - 1301 Jungle
Roads
(15p)
HDU-1301JungleRoads(15p)TheHeadElderofthetropicalislandofLagrishanhasaproblem.Aburstofforeignaidmoneywasspentonextraroadsbetweenvillagessomeyearsago.Butthejungleovertakesroadsrelentlessly,sothelargero
!天涯断肠人
·
2020-08-03 03:53
Constructing
Roads
POJ - 2421 prim
ThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAandB,orthereexistsavi
luer9
·
2020-08-03 03:44
prim
Constructing
Roads
ThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAandB,orthereexistsavi
HPU王小二
·
2020-08-03 03:01
最小生成树
POJ 2421 Constructing
Roads
【已知道路连通求最小生成树】
DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAandB,orthe
Kelisita
·
2020-08-03 03:00
POJ
POJ 1251 Jungle
Roads
(最小生成树【简单】)
TheHeadElderofthetropicalislandofLagrishanhasaproblem.Aburstofforeignaidmoneywasspentonextraroadsbetweenvillagessomeyearsago.Butthejungleovertakesroadsrelentlessly,sothelargeroadnetworkistooexpensivet
夜幕下的ACM之路
·
2020-08-03 03:43
POJ
最小生成树
树
POJ 2421 Constructing
Roads
(最小生成树简单题目)
ConstructingRoadsTimeLimit:2000MSMemoryLimit:65536KTotalSubmissions:21881Accepted:9295DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnect
夜幕下的ACM之路
·
2020-08-03 03:12
POJ
最小生成树
树
poj 1251 Jungle
Roads
解题报告(kruskal+prim)
JungleRoadsTimeLimit:1000MSMemoryLimit:10000KTotalSubmissions:21232Accepted:9817DescriptionTheHeadElderofthetropicalislandofLagrishanhasaproblem.Aburstofforeignaidmoneywasspentonextraroadsbetweenvilla
小夥
·
2020-08-03 02:59
最小生成树
A - Jungle
Roads
POJ - 1251-水题
#include#include#include#include#include#include#include#pragmawarning(disable:4996)usingnamespacestd;constintmaxn=1005;intk,m,n,E;intpar[3*maxn];intrak[3*maxn];intX[maxn];intY[maxn];intD[maxn];struct
3cqscbr
·
2020-08-03 02:35
最小生成树
POJ 1251 Jungle
Roads
(Prim算法)&& (Kruskal算法)
JungleRoadsTimeLimit:1000MSMemoryLimit:10000KTotalSubmissions:13508Accepted:6005DescriptionTheHeadElderofthetropicalislandofLagrishanhasaproblem.Aburstofforeignaidmoneywasspentonextraroadsbetweenvilla
qiyazhuang
·
2020-08-03 02:07
图论
POJ - Constructing
Roads
(最小生成树)
题目链接:http://poj.org/problem?id=2421TimeLimit:2000MSMemoryLimit:65536KDescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.Wesay
ityanger
·
2020-08-03 01:42
#
数据结构
#
最小生成树
ACM题解
POj 2041 Constructing
Roads
题目链接:http://poj.org/problem?id=2421赤裸裸的最小生成树习题!#include#includeusingnamespacestd;constintINF=0x1f1f1f1f;//设置一个非常大的值,用于每次找出low数组最小值intcost[101][101];//记录每条双向边的权值intlow[101];intf1[101],res;//标记是否加入最小生成树
研发之道
·
2020-08-03 01:33
最小生成树
POJ 1251 Jungle
Roads
(最小生成树)
POJ1251JungleRoadsDescriptionTheHeadElderofthetropicalislandofLagrishanhasaproblem.Aburstofforeignaidmoneywasspentonextraroadsbetweenvillagessomeyearsago.Butthejungleovertakesroadsrelentlessly,sothela
SPZn_up
·
2020-08-03 01:43
====ACM=====
图论
HDU 1301:Jungle
Roads
【Prim】
JungleRoadsTimeLimit:2000/1000MS(Java/Others)MemoryLimit:65536/32768K(Java/Others)TotalSubmission(s):5516AcceptedSubmission(s):3981ProblemDescriptionTheHeadElderofthetropicalislandofLagrishanhasaprobl
Cynthia lyn
·
2020-08-03 01:49
==图论==
====C&&C++====
最小生成树
POJ 2421 Constructing
Roads
(最小生成树)
DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAandB,orthe
lbperfect123
·
2020-08-03 01:29
最小生成树
POJ:2421 Constructing
Roads
与这个题基本一样。http://blog.csdn.net/kkkwjx/article/details/12316701最小生成树的题要搞清楚点的个数,边的个数,不要混了。#include#include#include#include#include#defineMAXN10005usingnamespacestd;structEdge{inta,b,weight;};intfather[10
kkkwjx
·
2020-08-03 01:04
POJ
Constructing
Roads
ConstructingRoadsTimeLimit:2000/1000MS(Java/Others)MemoryLimit:65536/32768K(Java/Others)TotalSubmission(s):23858AcceptedSubmission(s):9168ProblemDescriptionThereareNvillages,whicharenumberedfrom1toN,a
风_吟
·
2020-08-03 01:43
最小生成树
HDU 1301 &POJ 1215 Jungle
Roads
【最小生成树,Prime算法+Kruskal算法】
JungleRoadsTimeLimit:2000/1000MS(Java/Others)MemoryLimit:65536/32768K(Java/Others)TotalSubmission(s):6737AcceptedSubmission(s):4893ProblemDescriptionTheHeadElderofthetropicalislandofLagrishanhasaprobl
AC_Dreameng
·
2020-08-03 00:42
HDU
ACM_最小生成树
POJ
ACM_HDU刷题录
POJ 2421--Constructing
Roads
【水题 && 最小生成树 && kruskal】
ConstructingRoadsTimeLimit:2000MSMemoryLimit:65536KTotalSubmissions:20889Accepted:8817DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnect
阿阿阿阿_欢
·
2020-08-03 00:15
最小生成树
POJ
POJ-2421 D - Constructing
Roads
ConstructingRoadsTimeLimit:2000MSMemoryLimit:65536KTotalSubmissions:22053Accepted:9392DescriptionThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnect
信仰..
·
2020-08-03 00:05
最小生成树
H - Constructing
Roads
ThereareNvillages,whicharenumberedfrom1toN,andyoushouldbuildsomeroadssuchthateverytwovillagescanconnecttoeachother.WesaytwovillageAandBareconnected,ifandonlyifthereisaroadbetweenAandB,orthereexistsavi
gtuif
·
2020-08-03 00:24
最小生成树
HDU
最小生成树 之 kruskal 算法 Jungle
Roads
POJ - 1251
原题JungleRoads地图显示了现在使用的所有道路以及每月维护这些道路的费用。他们每个月能花多少钱,维护连接所有村庄的道路。这些村庄在上面的地图上标着A到I。右边的地图显示了最便宜的道路,每月216个aacms(货币单位,我也不知道哪国的)。输入输入由一到100个数据集组成,最后一行只包含0。每个数据集开始时只包含一个数字n,即村庄数,1输出量每个数据集的输出为每一行一个整数:每个月用于维护连
error311
·
2020-08-02 23:27
最小生成树
POJ11251---Jungle
Roads
(最小生成树)
【题目来源】:https://cn.vjudge.net/problem/POJ-1251【题意】这道题很水啦,只不过我新学了prim算法,就拿来练手啦。这道题题意是在给出的边里选权值和最小的边连通整个村庄。【思路】简单的最小生成树模型。下面先说一下我对prim算法的理解(博主去盗图啦):看这个图,假设我以点D为起点(谁是起点都无所谓的),那么选一条离D点最近的路,当然是DA(方向什么的无所谓。。
起风了_唯有努力生存
·
2020-08-02 23:45
ACM竞赛
【图论】--最小生成树
ACM的进程
POJ - 2421Constructing
Roads
prim
已连接的两条边权值更新为0,直接prim就可以了。#include#include#include#include#include#include#include#include#includeusingnamespacestd;#defineINF0x3f3f3f3f#definemem(arr,a)memset(arr,a,sizeof(arr))#defineV2000+5#defineLL
dreambyday
·
2020-08-02 23:42
最小生成树
POJ 2421 Constructing
Roads
最小生成树问题。Kruskal,如果已经有边就合并。然后找最小。没有坑点。G++AC。#include#include#include#include#include#include#include#include#include#include#include#defineINF0x7fffffff#defineeps1e-6usingnamespacestd;intn,m;intfa[101]
秋水忆秦谣
·
2020-08-02 23:36
Graph
Theory
poj 2421 Constructing
Roads
kruskal克鲁斯卡尔最小生成树
题意:给定n个村庄(顶点),给定各村庄之间直线距离,一个n*n的二维数组,第I行第j列的值代表顶点I到j的距离,然后是q个已经修好路的村庄,要求是修最短的路,使得所有村庄相互连通。思路:将已经修好路的各村庄的权值变为0,求最小生成树。注意图是完全图,边数是n*n-1/2。当作模板用一用吧克鲁斯卡尔算法思想:从小到大考虑每一条边,一开始生成树为空树,如果边两端点不在生成树中,将边加入生成树中,否则不
chen_minghui
·
2020-08-02 23:44
——图论——
poj 2421-Constructing
Roads
(经典Prime算法)
大致题意是求一颗最小生成树题目链接:http://poj.org/problem?id=2421#include#include#includeusingnamespacestd;intmain(){intdis[110][110],flag[110],distance;intn,q,i,j,k;while(cin>>n){distance=0;memset(flag,0,sizeof(flag)
caoxiaoran1202
·
2020-08-02 23:44
数据结构
poj 2421 Constructing
Roads
(最小生成树prim)
题目地址题目大意:给出一个图有n个点,以矩阵的形式给出点与点之间的权值,告诉其中m条边(边的端点)已经存在,求将整个图联通还需的最小权值和解题思路:首先判断为最小生成树,题目以矩阵的形式给出数据,用prim算法,因为已经给出部分边已联通,处理一下,直接模板#include#include#include#include#include#include#include#include#include
booyoungxu
·
2020-08-02 23:16
ACM
hduoj-1301 Jungle
Roads
(最小生成树-克鲁斯卡尔和普里姆求解)
JungleRoadsTimeLimit:2000/1000MS(Java/Others)MemoryLimit:65536/32768K(Java/Others)TotalSubmission(s):5505AcceptedSubmission(s):3976ProblemDescriptionTheHeadElderofthetropicalislandofLagrishanhasaprobl
bokzmm
·
2020-08-02 23:14
hduoj
POJ-2421 Constructing
Roads
题目链接:http://acm.hust.edu.cn/vjudge/contest/66965#problem/D题目大意:给你N个村庄之间的距离,再给你M个村庄已修好路,求将这N个村庄连接的最小距离和。解题思路:最小生成树。直接读入邻接矩阵,在修改其中一些点为0,用Prim求即可。代码:#include#include#include#include#includeusingnamespace
backforward
·
2020-08-02 23:28
题解
最小生成树
POJ-2421 Constructing
Roads
(最小生成树)
题目传送门:(POJ-2421ConstructingRoads)题目大意:要修公路,输入一个n,表示n个村庄。接着输入n*n的矩阵,该图的邻接矩阵,然后输入一个q接下来的q行每行包含两个数a,b,表示a、b这条边联通,就是已经有公路不用修了,要让所有村庄联通在一起问:修路最小代价?分析:根据题目输入构造邻接矩阵,然后把已经联通的村庄的距离设置为0,表示不用在修这条公路。在用新的邻接矩阵跑prim
aochan2391
·
2020-08-02 22:31
POJ 2421 Constructing
Roads
(最小生成树)
题意在n个村庄之间修路使所有村庄连通其中有些路已经修好了求至少还需要修多长路还是裸的最小生成树修好的边权值为0就行咯#include#include#include#includeusingnamespacestd;constintN=105,M=10050;intpar[N],n,m,mat[N][N];intans;structedge{intu,v,w;}e[M];boolcmp(edgea
virgoDd
·
2020-08-02 22:47
-POJ
---------
OJ
---------
--------
专
题
--------
-图论
Poj 2421 Constructing
Roads
(Prim 最小生成树)
题意:有几个村庄,要修最短的路,使得这几个村庄连通。但是现在已经有了几条路,求在已有路径上还要修至少多长的路。分析:用Prim求最小生成树,将已有路径的长度置为0,由于0是最小的长度,所以一定会被Prim选中加入最小生成树。packageMap;importjava.util.Scanner;/***Prime*/publicclassPoj_2421_Prim{staticintMAXVEX=2
a136358
·
2020-08-02 22:41
【题解】Constructing
Roads
POJ - 2421(最小生成树 Kruskal) ⭐⭐⭐
ConstructingRoadsPOJ-2421有N个村庄,从1到N,你应该修建一些道路,这样每两个村庄就可以连接起来。我们说两个村庄A和B相连,当且仅当A和B之间有一条路,或者存在一个村庄C使得A和C之间有一条路,并且C和B相连。我们知道一些村庄之间已经有一些道路了,你的工作是修建一些道路,这样所有的村庄都连接起来,所有道路的长度都是最小的。Input第一行是整数N(3#include#inc
Suprit
·
2020-08-02 22:37
图论
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