#include <bits/stdc++.h>
int main() {
  int N;
  scanf("%d", &N);
  if (N > 100)
    N %= 110;
  else if (N > 10)
    N %= 10;
  if (N == 3)
    printf("bon\n");
  else if (N == 0 || N == 1 || N == 6 || N == 8)
    printf("pon\n");
  else
    printf("hon\n");
  return 0;
}
