#include <bits/stdc++.h>
int main() {
  int N;
  scanf("%d", &N);
  if ((N % 10 == 2) || (N % 10 == 4) || (N % 10 == 5) || (N % 10 == 7) ||
      (N % 10 == 9)) {
    printf("hon\n");
  }
  if ((N % 10 == 0) || (N % 10 == 1) || (N % 10 == 6) || (N % 10 == 8)) {
    printf("pon\n");
  }
  if (N % 10 == 3) {
    printf("bon/n");
  }
  return 0;
}
