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