#include <bits/stdc++.h>
using namespace std;
int main () {
	int n; scanf("%d", &n);
	n %= 10;
	if (n == 3) printf("bon\n");
	else if (n == 0 || n == 1 || n == 6 || n == 8) printf("pon\n");
	else printf("hon\n");
	return 0;
}
