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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t;
  6. 	cin >> t;
  7. 	while(t--)
  8. 	{
  9. 		int n;
  10. 		cin >> n; 
  11. 		string s;
  12. 		cin >> s;
  13. 		for(int i=1;i<n-1;i++)
  14. 		{
  15. 			if(s[0] == s[i])
  16. 			{
  17. 				cout << "YES" << endl;
  18. 				break;
  19. 			}
  20. 			else if(s[n-1] == s[i])
  21. 			{
  22. 				cout << "YES" << endl;
  23. 				break;
  24. 			}
  25.  
  26. 		}
  27.  
  28.  
  29. 	}
  30. 	return 0;
  31. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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12
3
aaa
3
aba
3
aab
4
abca
4
abba
4
aabb
5
abaca
5
abcda
5
abcba
6
abcbbf
6
abcdaa
3
abb
stdout
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YES
YES
YES
YES
YES
YES
https://ideone.com/hnsxDE
language:
C++ (gcc 8.3)
created:
7 hours ago
visibility:
public

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