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## Discussion of Problem 1280. Topological Sorting

Posted by Shabab Karim 26 Aug 2015 12:15
What is Test #16? Please someone help!
Re: Wrong Answer on Test #16
Posted by Mewtwo 16 Apr 2017 19:08
Shabab Karim wrote 26 August 2015 12:15
What is Test #16? Please someone help!

Same here... got stuck in Test-16 .
Re: Wrong Answer on Test #16
Posted by fengbo 9 Dec 2018 21:25
so why did you get the WA16?
Re: Wrong Answer on Test #16
Posted by Tobi 14 Sep 2019 01:26
Well maybe someone gonna read this but i got WA #16 cause my logic was wrong.
i thought that i need to check if i studied any of prerequisite BUT i must check if i studied ALL OF them.
maybe my code would help idk

#include <iostream>
#include <vector>
using namespace std;

int N, M, a[(int)1e3 + 5], b, c;
bool visited[(int)1e3 + 5], flag, ans = true;
vector <vector <int> > adj((int)1e3 + 5);
int main()
{
cin >> N >> M;
while(M--)
cin >> b >> c, adj[c].push_back(b);
for(int i = 0; i < N;++i)
{
cin >> a[i];
flag = true;
visited[a[i]] = true;