#include<iostream>
using namespace std;
int main(){
  int N;
  cin >> N;
  if( N%10 = 3 ){
    cout << "bon" << endl;
  }else if(( N%10 = 0 || N%10 = 1) || ( N%10 = 6 || N%10 = 8)){
    cout << "pon" << endl;
  }else if((( N%10 = 2 || N%10 = 4) || ( N%10 = 5 )) || (N%10 = 7 || N%10 = 9 )){
    cout << "hon" << endl;
  }
  return 0;
}