2689

#include <iostream>

using namespace std;
short c[1001], i, n, pal;
int main()
{
     cin >> n;

  for (i=0; i<n; ++i)

  {

      cin >> c[i];

  }
  for (i=0; i<n; ++i)

     cout << c[i];

  cout << "\n";

  pal=1;
   for (i=0; i<n/2; ++i)

       if (c[i]!=c[n-i-1]) { pal=0; break; }

  if (pal) cout << "DA";

  else cout << "NU";
    return 0;
}