#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");
       if(n==0||n==1||n==6||n==8)
                printf("pon");
                     if(n==3)
                printf("bon");
    
    return 0;
}