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