#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pb push_back
#define FIO ios_base::sync_with_stdio(false), cin.tie(NULL);
#define N 

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