题目链接 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, B, C, D implies that A < B, B < C and C < D. in…

题目链接:http://poj.org/problem?id=1270 思路:就是一简单的dfs+拓扑排序,然后就是按字典序输出所有的情况. http://paste.ubuntu.com/5987294/…

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…

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,…

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,…

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…

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…

http://poj.org/problem?id=1094 这一题,看了个大牛的解题报告,思路变得非常的清晰: 1,先利用floyd_warshall算法求出图的传递闭包 2,再判断是不是存在唯一的拓扑排序,利用出度和入度是不是相加为n-1 3,利用拓扑排序求出当前的图形的唯一的拓扑排序 一开始我的思路跟上述的差不多,但是没有利用floyd_warshall算法求出传递闭包,准备着利用拓扑排序求出是不是存在着有环回路,我觉得我的这个思路也是可以的.等一下我会将我的这个思路给写成程序.在我的百度…

题目链接:http://poj.org/problem?id=1094 题目意思:给出 n 个待排序的字母 和 m 种关系,问需要读到第 几 行可以确定这些字母的排列顺序或者有矛盾的地方,又或者虽然具体的字母顺序不能确定但至少不矛盾.这些关系均是这样的一种形式: 字母1 < 字母2 这道题目属于图论上的拓扑排序,由于要知道读入第几行可以确定具体的顺序,所以每次读入都需要进行拓扑排序来检验,这时每个点的入度就需要存储起来,所以就有了代码中memcpy 的使用了. 拓扑排序的思路很容易理解,但写起来…

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…