#include <bits/stdc++.h>
using namespace std;
int n, i, m, j, k, s, a;
int main() {
  scanf("%d", n);
  n = n % 10;
  if (n == 2 || n == 4 || n == 5 || n == 7 || n == 9) {
    printf("hon");
  } else if (n == 0 || n == 1 || n == 6 || n == 8) {
    printf("pon");
  } else if (n == 3) {
    printf("bon");
  }
}
