#include <iostream>

using namespace std;

int main(){
	int n;
  	cin>>n;
  	if(n%10 ==2 ||n%10 ==4||n%10 ==5||n%10 ==7||n%10 ==9)
    {
      cout<<'hon';
    }
  else if(n%10 ==0||n%10 ==1||n%10 ==6||n%10 ==8)
  {
    cout<<'pon';
  }
  else if(n%10 ==3){
    cout<<'bon
  }
}