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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. 		string s;
  10. 		int  k,n;
  11. 		cin >> n >> k;
  12. 		cin >> s;
  13. 		map<char,int> m;
  14. 		for(int i=0;i<n;i++)
  15. 		{
  16. 			m[s[i]]++;
  17. 		}
  18. 		int sum=0;
  19. 		for(auto x : m)
  20. 		{
  21. 			sum = x.second;
  22. 		}
  23. 		if(n>1 && k>0 && sum!=n)
  24. 		{
  25. 			cout << "YES" << endl;
  26. 		}
  27. 		else
  28. 		{
  29. 			cout << "NO" << endl;
  30. 		}
  31. 	}
  32. 	return 0;
  33. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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8
1 10000
a
3 3
rev
6 0
string
6 0
theory
9 2
universal
19 0
codeforcesecrofedoc
19 1
codeforcesecrofedoc
3 1
zzz
stdout
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NO
YES
NO
NO
YES
NO
YES
NO
https://ideone.com/tY9DD0
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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