#include<bits/stdc++.h>
using namespace std;
 
int main(){
  int N, a;
  cin >> N;
  a = N % 10;
  if(a = 2 ||a = 4 ||a = 5 ||a = 7 ||a = 9){
    cout << "hon" <<endl;
}
else if(a = 0 ||a = 1 ||a = 6 ||a = 8){
  cout << "pon" <<endl;
}
  else if(a = 3){
    cout << "bon" <<endl;
  }
}