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

}