Codeforces 1324 B. Yet Another Palindrome Problem Solution

Solution in c++:

1. ///**********ALLAH IS ALMIGHTY************///
2. ///AH Tonmoy
3. ///Department of CSE,23rd batch
4. ///Islamic University,Bangladesh
5. #include<iostream>
6. using namespace std;
7. int main()
8. {
9.  
10. int n,i,t,j,f,a[50000];
11. cin>>t;
12. while(t--)
13. {
14. cin>>n;
15. f=0;
16. for(i=1; i<=n; i++)
17. cin>>a[i];
18.  
19. for(i=1; i<n-1; i++)
20. {
21. for(j=i+2; j<=n; j++)
22. {
23. if(a[i]==a[j])
24. {
25. f=1;
26. break;
27. }
28. if(f==1)
29. break;
30. }
31. if(f==1)
32. break;
33. }
34. if(f==1)
35. cout<<"YES"<<endl;
36. else
37. cout<<"NO"<<endl;
38. }
39. }