#include <bits/stdc++.h>
int main() {
  int N;
  scanf("%d", &N);
  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;
}
