poj 1094 Sorting It All Out Time Limit:1000MS Memory Limit:10000KB 64bit IO Format:%lld & %llu Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from sm…
一.什么是拓扑排序 在图论中,拓扑排序(Topological Sorting)是一个有向无环图(DAG, Directed Acyclic Graph)的所有顶点的线性序列.且该序列必须满足下面两个条件: 每个顶点出现且只出现一次. 若存在一条从顶点 A 到顶点 B 的路径,那么在序列中顶点 A 出现在顶点 B 的前面. 有向无环图(DAG)才有拓扑排序,非DAG图没有拓扑排序一说. 例如,下面这个图: 它是一个 DAG 图,那么如何写出它的拓扑排序呢?这里说一种比较常用的方法: 从 DAG…
http://poj.org/problem?id=1094 Sorting It All Out Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 24505 Accepted: 8487 Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is use…
Sorting It All Out Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 39602 Accepted: 13944 Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from s…
Sorting It All Out Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 26801 Accepted: 9248 Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from sm…
Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to largest. For example, the sorted sequence A, B, C, D implies that A < B, B < C and C < D.…
题意:给出n个字符,m对关系,让你输出三种情况: 1.若到第k行时,能判断出唯一的拓扑序列,则输出: Sorted sequence determined after k relations: 序列 2.若到第k行,出现环,则输出: Inconsistency found after k relations. 3.若直到m行后,仍判断不出唯一的拓扑序列,则输出: Sorted sequence cannot be deter…
Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to largest. For example, the sorted sequence A, B, C, D implies that A < B, B < C and C < D.…
题意:是否唯一确定顺序,根据情况输出 #include <iostream> #include<cstdio> #include<cstring> #include<stack> using namespace std; /* run this program using the console pauser or add your own getch, system("pause") or input loop */ #define N…
Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to largest. For example, the sorted sequence A, B, C, D implies that A < B, B < C and C < D.…
Sorting It All Out 时间限制:3000 ms | 内存限制:65535 KB 难度:3 描述 An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to largest. For example, the sorted sequence A,…
Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to largest. For example, the sorted sequence A, B, C, D implies that A < B, B < C and C < D.…
点击打开链接 Sorting It All Out Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 24544 Accepted: 8503 Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements…
题目链接 http://poj.org/problem?id=2367 题意就是给定一系列关系,按这些关系拓扑排序. #include<cstdio> #include<cstring> #include<queue> #include<vector> #include<algorithm> using namespace std; ; int ans; int n; int in[maxn]; //记录入度 int num[maxn]; //记…
Sorting It All Out Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 38100 Accepted: 13453 Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from small…
题目链接: http://poj.org/problem?id=1094 题意: 给定前n个字母的大小关系,问你是否 根据前xxx个关系得到上升序列 所有关系都无法确定唯一的一个序列 第xxx个关系导致出现环 分析: 此题坑略多.... m大小没给!!这个很无语啊...数组开大点马上AC了... 无法确定序列必须最后判断. 一旦可以判断出上升序列,就不用管后面是否出现闭环了~~ where xxx is the number of relations processed at the time…
Sorting It All Out Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 28762 Accepted: 9964 Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from sm…
