#include <stdio.h>

int main(){
  int N;
  scanf("%d",&N);

  if (N % 10 == 1 || N % 10 == 6 || N % 10 == 8 || N % 10 == 0) {
      printf("pon");
  }else if (N % 10 == 2 || N % 10 == 4||N % 10 == 5 || N % 10 == 7 || N % 10 == 9) {
      printf("hon");
  }else if (N % 10 == 3) {
      printf("bon");
  }

}