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

}
