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