#include<stdio.h>

int main(){
    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\n");
    return 0;
}