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