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Added some input to help with testing / debugging here:

http://www.udebug.com/UVa/599

Just got AC for the problem. Turns out you don't need to implement cycle-finding for your DFS (DFS with cycle-finding will give WA). Just a simple DFS with coloring will do; a tree will contain colored nodes. Any white node in adjacency list with an empty list is an acorn. Be sure to add edge twice ...

... 599,601,607,613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769}; int prime[1000005]; void primecheck() ...

Thank you very much. I got it accepted now.

I'm having an issue with my code. It works for the sample input but I get RE when submitting Try configuring your compiler to show you all possible warnings, as that may help you catch subtle bugs. For example, when I compiled your code, I received: p.cpp: In function ‘int main()’: p.cpp:64:17: war...

I'm having an issue with my code. It works for the sample input but I get RE when submitting #include <stdio.h> #include <map> #include <vector> using namespace std; typedef vector<int> vi; class UnionFind{ private: vi p,rank; int singles, sets; public: UnionFind(int N){ singles=sets=N; rank.assign(...

brianfry713 wrote:acorn not acron

That was nice ! Attention to detail ! Sometimes I use windiff to compare sample output with my output just to catch these kind of "eye tricking" errors.

acorn not acron

here is the problem statement: http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=540 Can I solve it in this manner? First count the no. of vertices and edges in the graph. Then using a bitset of size 26 , mark the vertices whic...

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Use union find.

getting TLE ans .... help me plz...... #include<iostream> #include<stdio.h> #include<queue> #include<string.h> #include<vector> using namespace std; int main() { int I,K,L,M,N,Tcase,Tree,Acron; char Input[100],A,B; scanf("%d",&Tcase); while(Tcase--){ Tree=0;Acron=0; vector<char>V[10000...

Why getting WA with this code ? Can anyone give some sampe input ouput.. #include<stdio.h> #include<string.h> int bfs(int); int vis[200]; struct{ int a[100],size; }node[100]; int main() { char p,q,s[1000],ch; int t,loc[2000],l,i,acorn,tree,no,m,n; scanf("%d",&t); getchar(); while(t--) ...

I just read the html and got ac.