#include <iostream>
using namespace std;

bool checkpl(string st,int s,int e){
    if(st[s]!=st[e])return false;
    if(s>=e)return true;
    return checkpl(st,s+1,e-1);
}
int main() {
string s;
cin>>s;
int n=s.lenth();
if(checkpl,0,n){
    cout<<"palindrome";
}
else{
    cout<<"Not  a Palindeome";
}
}