Is It A Tree? 题目链接:http://poj.org/problem?id=1308 Description: A tree is a well-known data structure that is either empty (null, void, nothing) or is a set of one or more nodes connected by directed edges between nodes satisfying the following proper…
Is It A Tree? Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 28838 Accepted: 9843 -> Link poj <- -> Link hdu<- -> Link NYoj <- 这三个题题目都是一样的,我先做的NYOJ上的,以-1.-1结尾,然后跑到HDu上交一遍跪了,改成同时小于0就A了, 又到POJ上交一遍又跪了,改成-1.-1结尾又A了: 题意…
Is It A Tree? Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 22631 Accepted: 7756 Description A tree is a well-known data structure that is either empty (null, void, nothing) or is a set of one or more nodes connected by directed edge…
http://poj.org/problem?id=1308 Description A tree is a well-known data structure that is either empty (null, void, nothing) or is a set of one or more nodes connected by directed edges between nodes satisfying the following properties.There is exactl…