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  1. #include<bits/stdc++.h>
  2. const int M=2e5;
  3. using namespace std;
  4. vector<int>v[M];
  5. int d[M];
  6. void dfs(int u,int p,int c)
  7. {
  8. 	d[u]=c;
  9. 	for(auto &to:v[u])
  10. 	{
  11. 		if(to!=p)
  12. 		{
  13. 			dfs(to,u,1-c);
  14. 		}
  15. 	}
  16. }
  17. int main() {
  18. 	int n;
  19. 	cin>>n;
  20. 	for(int i=0;i<n-1;i++)
  21. 	{
  22. 		int x,y;
  23. 		cin>>x>>y;
  24. 		v[x].push_back(y);
  25. 		v[y].push_back(x);
  26. 	}
  27. 	dfs(1,-1,0);
  28. 	int q;
  29. 	cin>>q;
  30. 	while(q--)
  31. 	{
  32. 		int x,y;
  33. 		cin>>x>>y;
  34. 		if(d[x]^d[y])
  35. 		cout<<"Odd"<<endl;
  36. 		else
  37. 		cout<<"Even"<<endl;
  38. 	}
  39. 	return 0;
  40. }
Runtime error #stdin #stdout 0s 20696KB
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https://ideone.com/nBhRcM
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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