#include<stdio.h>

int main (void){

    int n;

    scanf("%d",&n);

    if(10<=n<100){
        n%=10;
    }

    if(n==3){
        printf("bon");
    }else if(n==0||n==1||n==6||n==8){
        printf("pon");
    }else{
        printf("hon");
    }


    return 0;
}