#include <iostream>
using namespace std;

int main()
{
   int n;
   cin >> n;

   int i = n, cifra, zbir = 0;
   while(i > 0) 
   {
    cifra = i % 10;
    i /= 10;
    zbir += 1; 
   }
   if(zbir % 2 == 0) 
   {
    cout << "PAREN" << endl;
   }
   else 
   {
    cout << "NEPAREN" << endl;
   }

}