#include<stdio.h>
signed main(){
    int n;
    scanf("%d",&n);
    n%=10;
    if(n==2||n==4||n==5||n==7||n==9){
        printf("hon\n");
    }
    if(n==0||n==1||n==6||n==8){
        printf("pon\n");
    }
    if(n==3){
        printf("bon\n");
    }
    return(0);
}