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