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