#include<bits/stdc++.h>

using namespace std;




int main(){
	int s;
	cin >> s;
	s %= 10;
	if(s==2||s==4||s==5||s==7||s==9){
		cout << "hon" << endl;
	}
	else if(s==0||s==1||s==6||s==8){
		cout <<"pon"<<endl;
	}
	else{
		cout <<"bon"<<endl;
	}
}
