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