#include<stdio.h>
int main(){
    int n;
    scanf("%d",&n);
    n=n%100;
    n=n%10;
    if(n==3){
        printf("bon\n");
    }else if(n==0 || n==1 || n== 6|| n==8){
        printf("pon\n");
    }else{
        printf("hon\n");
    }
    return 0;
}