#include <stdio.h>
int main() {
 int n;
 scanf("%d", &n);
 switch (n % 10) {
 case 2:
 
case 4:
 
case 5:
  case 7:
  case 9:
  
printf("hon");
  break;
  case 0:
  case 1:
  case 6:
  case 8:
  printf ("pon");
  break;
  case 3:
  printf("bon");
 break;
 }

 return 0;
}