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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void dfs(int node,vector<int>g[],vector<int>&v){
  5. 	cout<<node<<"\n";
  6. 	v[node]=1;
  7. 	for(auto &it:g[node]){
  8. 		if(v[it]==0){
  9. 			dfs(it,g,v);
  10. 		}
  11. 	}
  12. }
  13.  
  14. int main() {
  15. 	int n,e;
  16. 	cin>>n>>e;
  17. 	vector<int>g[n+1];
  18. 	for(int i=1;i<=e;i++){
  19. 		int x,y;
  20. 		cin>>x>>y;
  21. 		g[x].push_back(y);
  22. 		g[y].push_back(x);
  23. 	}
  24. 	int s;
  25. 	cin>>s;
  26. 	stack<int>st;
  27. 	vector<int>v(n+1,0);
  28. 	dfs(s,g,v);
  29. 	return 0;
  30. }
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
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8 7 
1 2
1 3
2 4 
2 5 
3 6 
3 7 
5 8
1
stdout
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1
2
4
5
8
3
6
7
https://ideone.com/DcXU9E
language:
C++14 (gcc 8.3)
created:
8 days ago
visibility:
public

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