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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t;
  6. 	cin >> t;
  7. 	int n,c=0;
  8. 	cin >> n;
  9. 	string s;
  10. 	cin >> s;
  11. 	map<char, int> m;
  12. 	for(int i=0;i<n;i++)
  13. 	{
  14. 		m[s[i]]++;
  15. 	}
  16. 	for(int i=1;i<n;i++)
  17. 	{
  18. 		if(m[s[i]]>1)
  19. 		{
  20. 			c=1;
  21. 			break;
  22. 		}
  23. 	}
  24. 	if(c>0)
  25. 	{
  26. 		cout << "YES" << endl;
  27. 	}
  28. 	else
  29. 	{
  30. 		cout << "NO" << endl;
  31. 	}
  32. 	return 0;
  33. }
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
https://ideone.com/MLUZ2J
language:
C++ (gcc 8.3)
created:
7 days ago
visibility:
public

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