#include <bits/stdc++.h>
int main(void) {
  int number, ones_place;
  scanf("%d", &number);
  ones_place %= 10;
  switch (ones_place) {
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      printf("hon\n");
      break;
    case 0:
    case 1:
    case 6:
    case 8:
      printf("pon\n");
      break;
    case 3:
      printf("bon\n");
    default:
      break;
  }
  return 0;
}
