#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int main(void){
int n;
scanf("%d",&n);
if(n%10==3){printf("bon\n");}
else if(n%10==0||n%10==1||n%10==6||n%10==8){printf("pon\n");}
else{printf("hon");}
}
