#include<stdio.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\n");
        }
    }
    return 0;
}