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