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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int a,b,c,d,n;
  6. 	cin >> a;
  7. 	while (a--)
  8. 	{
  9. 		cin >> n;
  10. 		if (n%2 == 0)
  11. 		{
  12. 			cout << -1 << '\n';
  13. 		}
  14. 		else
  15. 		{
  16. 			while (n--)
  17. 			{
  18. 				cout << n+1 << ' ';
  19. 			}
  20. 			cout << '\n';
  21. 		}
  22. 	}
  23. }
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
copy 
3
4
5
3
stdout
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-1
5 4 3 2 1 
3 2 1
https://ideone.com/QVpKQY
language:
C++14 (gcc 8.3)
created:
7 days ago
visibility:
public

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