HDU 1535】的更多相关文章

两次SPFA. 求 来 和 回 的最短路之和. 用Dijkstra+邻接矩阵确实好写+方便交换.可是这个有1000000个点.矩阵开不了. d1[]为 1~N 的最短路. 将全部边的 邻点 交换. d2[] 为 1~N 的最短路. 全部相加为 所要答案. 忧伤的是用SPFA  "HDU 1535"  AC了.可是POJ 一样的题 "POJ 1511" 就WA了. 然后强迫症犯了.不停的去測试. 题意中找到一句关键话 :Prices are positive inte…
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…
http://acm.hdu.edu.cn/showproblem.php?pid=1535 这道题两遍spfa,第一遍sfpa之后,重新建图,所有的边逆向建边,再一次spfa就可以了. #include <cstdio> #include <cstring> #include <iostream> #include <queue> #include <algorithm> #define maxn 1000001 using namespace…
题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=1535 Problem Description In the age of television, not many people attend theater performances. Antique Comedians of Malidinesia are aware of this fact. They want to propagate theater and, most of all,…
http://acm.hdu.edu.cn/showproblem.php?pid=1535 水题 单向图,从1到P所有点,再从所有点回到1,问最小花费 先求一遍1的最短路,然后反向建图,再求一遍1的最短路 #include <iostream> #include <queue> using namespace std ; const int INF=0xfffffff ; struct node{ int s,t,v,nxt ; }e[] ; ],vis[],dis[] ; ],…
题目链接: 传送门 Invitation Cards Time Limit: 5000MS     Memory Limit: 32768 K Description In the age of television, not many people attend theater performances. Antique Comedians of Malidinesia are aware of this fact. They want to propagate theater and, mo…
题意: (欧洲人自己写的题面就是不一样啊...各种吐槽...果断还是看晕了) 有向图, 有个源叫CCS, 求从CCS到其他所有点的最短路之和, 以及从其他所有点到CCS的最短路之和. 思路: 返回的时候是多个源,但是因为终点只有一个,所以把所有边反向之后, 再SPFA一次源即可. #include<cstdio> #include<vector> #include<queue> const int MAXN=1000000+10; typedef long long l…
题意: 有编号1-P的站点, 有Q条公交车路线,公交车路线只从一个起点站直接到达终点站,是单向的,每条路线有它自己的车费. 有P个人早上从1出发,他们要到达每一个公交站点, 然后到了晚上再返回点1. 求所有人来回的最小费用之和. 思路: 1.两次SPFA,也就是巧妙的将路线进行了翻转. code 1:(数据较大,不能用二维数组,用的邻接表) #include <stdio.h> #include <string.h> #include <algorithm> #incl…
Invitation Cards Time Limit : 10000/5000ms (Java/Other)   Memory Limit : 65536/65536K (Java/Other) Total Submission(s) : 28   Accepted Submission(s) : 14 Font: Times New Roman | Verdana | Georgia Font Size: ← → Problem Description In the age of telev…
题目链接 Problem Description In the age of television, not many people attend theater performances. Antique Comedians of Malidinesia are aware of this fact. They want to propagate theater and, most of all, Antique Comedies. They have printed invitation c…
Invitation Cards Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 2972    Accepted Submission(s): 1385 Problem Description In the age of television, not many people attend theater performances.…
Invitation Cards Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1588    Accepted Submission(s): 714 Problem Description In the age of television, not many people attend theater performances. A…
S-Nim Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8729    Accepted Submission(s): 3660 Problem Description Arthur and his sister Caroll have been playing a game called Nim for some time now.…
Invitation Cards In the age of television, not many people attend theater performances. Antique Comedians of Malidinesia are aware of this fact. They want to propagate theater and, most of all, Antique Comedies. They have printed invitation cards wit…
Invitation Cards Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 3129    Accepted Submission(s): 1456 Problem Description In the age of television, not many people attend theater performances.…
HDU 模拟题, 枚举1002 1004 1013 1015 1017 1020 1022 1029 1031 1033 1034 1035 1036 1037 1039 1042 1047 1048 1049 1050 1057 1062 1063 1064 1070 1073 1075 1082 1083 1084 1088 1106 1107 1113 1117 1119 1128 1129 1144 1148 1157 1161 1170 1172 1177 1197 1200 1201…
转自——http://blog.csdn.net/qwe20060514/article/details/8112550 =============================以下是最小生成树+并查集======================================[HDU]1213   How Many Tables   基础并查集★1272   小希的迷宫   基础并查集★1325&&poj1308  Is It A Tree?   基础并查集★1856   More i…
转载来自:http://www.cppblog.com/acronix/archive/2010/09/24/127536.aspx 分类一: 基础题:1000.1001.1004.1005.1008.1012.1013.1014.1017.1019.1021.1028.1029.1032.1037.1040.1048.1056.1058.1061.1070.1076.1089.1090.1091.1092.1093.1094.1095.1096.1097.1098.1106.1108.1157…
模拟题, 枚举1002 1004 1013 1015 1017 1020 1022 1029 1031 1033 1034 1035 1036 1037 1039 1042 1047 1048 1049 1050 1057 1062 1063 1064 1070 1073 1075 1082 1083 1084 1088 1106 1107 1113 1117 1119 1128 1129 1144 1148 1157 1161 1170 1172 1177 1197 1200 1201 120…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1535 分析: 题意:求1点到其它点的最短距离之和+其它点到1点的最短距离之和 前面一部分直接用SPFA算法求出,而后一部分可用一数组存放反向边 (所有边的方向都反一下),利用反向边SPFA求出1点到其它点距离即可. #include <iostream> #include <cstdio> #include <cmath> #include <cstdlib>…
转载:from http://blog.csdn.net/qq_28236309/article/details/47818349 基础题:1000.1001.1004.1005.1008.1012.1013.1014.1017.1019.1021.1028.1029. 1032.1037.1040.1048.1056.1058.1061.1070.1076.1089.1090.1091.1092.1093. 1094.1095.1096.1097.1098.1106.1108.1157.116…
=============================以下是最小生成树+并查集====================================== [HDU] 1213 How Many Tables 基础并查集★ 1272 小希的迷宫 基础并查集★ 1325&&poj1308 Is It A Tree? 基础并查集★ 1856 More is better 基础并查集★ 1102 Constructing Roads 基础最小生成树★ 1232 畅通工程 基础并查集★ 123…
HDU分类 http://www.cnblogs.com/ACMan/archive/2012/05/26/2519550.html#2667329 努力A完.方便自己系统A题 不断更新中.................. 水题:1001 1004 简单题1005 找规律 (循环点,周期问题)1008 1012 1013 简单题(有个小陷阱,大数)1017 1018 简单数学题 1019 简单数学题 1020 简单的字符串处理 1021 找规律的数学题,周期81030 简单题,找规律的数学题1…
=============================以下是最小生成树+并查集====================================== [HDU] 1213 How Many Tables 基础并查集★ 1272 小希的迷宫 基础并查集★ 1325&&poj1308 Is It A Tree? 基础并查集★ 1856 More is better 基础并查集★ 1102 Constructing Roads 基础最小生成树★ 1232 畅通工程 基础并查集★ 123…
Saving HDU Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 7194    Accepted Submission(s): 3345 Problem Description 话说上回讲到海东集团面临内外交困,公司的元老也只剩下XHD夫妇二人了.显然,作为多年拼搏的商人,XHD不会坐以待毙的.  一天,当他正在苦思冥想解困良策的…
http://acm.hdu.edu.cn/showproblem.php?pid=3037 Lucas定理模板. 现在才写,noip滚粗前兆QAQ #include<cstdio> #include<cstring> #include<algorithm> using namespace std; typedef long long ll; int jc[100003]; int p; int ipow(int x, int b) { ll t = 1, w = x;…
http://acm.hdu.edu.cn/showproblem.php?pid=4859 题目大意: 在一个矩形周围都是海,这个矩形中有陆地,深海和浅海.浅海是可以填成陆地的. 求最多有多少条方格线满足两侧分别是海洋和陆地 这道题很神 首先考虑一下,什么情况下能够对答案做出贡献 就是相邻的两块不一样的时候 这样我们可以建立最小割模型,可是都说是最小割了 无法求出最大的不相同的东西 所以我们考虑转化,用总的配对数目 - 最小的相同的对数 至于最小的相同的对数怎么算呢? 我们考虑这样的构造方法:…
Special equations Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4569 Description Let f(x) = a nx n +...+ a 1x +a 0, in which a i (0 <= i <= n) are all known integers. We call f(x) 0 (mod…
The kth great number Time Limit:1000MS     Memory Limit:65768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4006 Description Xiao Ming and Xiao Bao are playing a simple Numbers game. In a round Xiao Ming can choose to write down a nu…
How many integers can you find Time Limit:5000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1796 Description   Now you get a number N, and a M-integers set, you should find out how many integers which are sm…