#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
bool isPalindrome(const string & word)
{
string reversedword=word;
reverse(reversedword.begin(),reversedword.end());
return word==reversedword;
}
int main()
{
string word;
cin>>word;
if(isPalindrome(word))
{
cout<<"palindrome";
}
else
{
cout<<"not";
}
cout<<endl;
return 0;
}
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