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