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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int indegree[100005],parent[100005];
  4. int main(){
  5. 	int n,k,w,u,mb=-1;
  6. 	cin>>n>>k;
  7. 	for(int i=1;i<=k;i++){
  8. 		cin>>w;
  9. 		while(w--){
  10. 			cin>>u;
  11. 			indegree[u]++;
  12. 			parent[u]=i;
  13. 		}
  14. 	}
  15. 	for(int i=1;i<=n;i++){
  16. 		if(indegree[i]==0 && mb==-1)
  17. 			mb=i;
  18. 		else if(indegree[i]==0)
  19. 			parent[i]=mb;
  20. 	}
  21. 	for(int i=1;i<=n;i++)
  22. 		cout<<parent[i]<<endl;
  23. }
Success #stdin #stdout 0s 4248KB
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Standard input is empty
stdout
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https://ideone.com/8japCn
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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