#include <bits/stdc++.h>
using namespace std;

int main()
{
  int N;
  cin>>N;
  int mod = N%10;
  switch(mod)
  {
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      cout<<"hon\n";
      break;
    case 0:
    case 1:
    case 6:
    case 8:
      cout<<"pon\n";
      break;
    default:
      cout<<"bon\n";
  }
  return 0;
}
/*
