#include <iostream>
using namespace std;
int main(){
 int x,N;
  cin >> N;
  x=((N%100)%10);
  if(x==2 or x==4 x==5 or x==7 or x==9){
  cout << "hon" << endl;
  }
  else if(x== 0 or x == 6 or x == 8)
    cout << "pon" << endl;
  else cout << "bon" << endl;
}