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Jan 25th, 2020
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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main ()
  5. {
  6. int n,A[1001],cnt=0;
  7. cin>>n;
  8. for(int i=1; i<=n;i++)
  9. cin>>A[i];
  10. //fac perechi
  11. int ok=1;//presupun ca !=
  12. for(int i=1; i<=n;i++)
  13. for(int j=i; j<=n; j++)
  14. if(i!=j && A[i]==A[j])
  15. ok=0;//2 == => nu!=
  16. if(ok)
  17. cout<<"DA";
  18. else
  19. cout << "NU";
  20.  
  21.  
  22. return 0;
  23. }
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