#include <stdio.h>
int main()
{
int n;
  scanf("%d",&n);
  switch(n%10)
  {
    case 2:
    case 4:
    case 5:
    case 7:
    case 7: printf("hon");
      break;
    case 0:
    case 1:
    case 6:
    case 8:printf("pon");
      break;
    case 3:printf("bon");
      break;
  }
  
  return 0;
}
