#include <stdio.h>
int main(void)
{
  int N;
  scanf ("%d",&N);
  if (N%10==3){printf ("bon");}
  else if (N%10==2||N%10==4||N%10==5||N%10==7||N%10==9){printf ("hon");}
  else if (N%10==0||N%10==1||N%10==6||N%10==8){printf ("pon");}// Your code here!
}
