/*
AUTHOR: Aman Raj
LANG: C++
*/

using namespace std;

typedef   long long ll;
#include <bits/stdc++.h>


//setbase - cout << setbase (16); cout << 100 << endl; Prints 64
//setfill -   cout << setfill ('x') << setw (5); cout << 77 << endl; prints xxx77
//setprecision - cout << setprecision (14) << f << endl; Prints x.xxxx
//cout.precision(x)  cout<<fixed<<val;  // prints x digits after decimal in val
#define fast  ios_base::sync_with_stdio(false); cin.tie(0);  cout.tie(0);
#define all(a) a.begin(),a.end()
//#define mod 998244353
#define mod 100000007
#define inf 1e18
//#define mod 3
#define flush fflush(stdout)

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef cc_hash_table<ll, ll, hash<ll> > ht;

// find_by_order()  // order_of_key
typedef tree<
    int,
    null_type,
    less<long long int>,
    rb_tree_tag,
    tree_order_statistics_node_update>
    ordered_set;






ll power1(ll a, ll b)//a raised to power b
   {  if(b<=0) return 1; if(b==1) return a;
       ll c=power1(a,b/2);
        c*=c;c=c%mod;if(b%2==1) c*=a;c=c%mod;
        return c;
   }
   ll mi(ll a,ll m)
   { ll c= power1(a,m-2);

     return c;
   }



 struct less_then_greater {
    template<typename T, typename U>
    bool operator()(T const& lhs, U const& rhs) const {
        if (lhs.first < rhs.first) return true;
        if (rhs.first < lhs.first) return false;
        return lhs.second > rhs.second;
    }
};
 /*std::priority_queue<std::pair<int, int>,
                    std::vector<std::pair<int, int>>,
                    less_then_greater
                   > pq;*/



  int main()
{    fast;
   ll n;cin>>n;
     ll a;
      while(n>0)
      {
          a=n%10;n/=10;
      }
       set<ll> s1={2,4,5,7,9},s2={0,1,6,8};
        if(s1.count(a))cout<<"hon";
        else if(s2.count(a))cout<<"pon";
        else cout<<"bon"<<endl;

        return 0;
}
