#include <bits/stdc++.h>

template <class T>
class Read
{
  std::string& s;

  public:
  Read(std::string& s) : s(s) {}
  void operator()(const T& chr)
  {
    if (isalpha(chr))
      s += chr;
  }
};

int main()
{
  freopen("STL3.in", "r", stdin);
  std::string s, s_rev;
  for_each(std::istream_iterator <char> (std::cin), std::istream_iterator <char> (), Read<char> (s));
  std::transform(s.begin(), s.end(), s.begin(), tolower);
  s_rev = s;
  std::reverse(s_rev.begin(), s_rev.end());
  if (s == s_rev)
    std::cout << "palindrom";
  else
    std::cout << "not palindrom";
  return 0;
}