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