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