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: 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: 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…

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…

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…

<题目链接> 题目大意: 对于N个大写字母,给定它们的一些关系,要求判断出经过多少个关系之后可以确定它们的排序或者排序存在冲突,或者所有的偏序关系用上之后依旧无法确定唯一的排序. 解题分析: 因为本题在确定发生冲突和能够确定唯一排序的时候要及时输出,所以必然是每输入一对关系,就进行一次拓扑排序来判断.然后判断冲突就是判断是否存在环,判断是否能够确定唯一排序就是在不存在环的情况下,同时任何时候都不存在多个入度为0点. #include <iostream> #include <…

https://vjudge.net/problem/POJ-1094 题意 对于N个大写字母,给定它们的一些关系,要求判断出经过多少个关系之后可以确定它们的排序或者排序存在冲突,或者所有的偏序关系用上之后依旧无法确定唯一的排序. 分析 拓扑排序模板题.唯一麻烦点的是判断在第几个式子就可以确定关系.由于在题目中,每个元素的关系都是严格定义的,那么当队列中存在不止一个入度为0的顶点时,可以认为未能成功排序,即还需要更多条件.当拓扑排序算法进行完后,拓扑序列的个数不够,则认为排序出现了矛盾. #in…

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.…

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…