#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
using P = pair<int,int>;
/* ちゃんと考えてわかって実装 */

int main(void){
    int n;
    cin >> n;
    if(n % 10 == 3){
        cout << "bon" << endl;
    }
    else if(n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8){
        cout << "pon" << endl;
    }
    else{
        cout << "hon" << endl;
    }
    return 0;
}