#include<stdio.h>
int main()
{
    int n,m;
    

    scanf("%d", &n);
    
    m = n % 10;
    if (m == 3) 
        printf("bon\n");
    else  if (m == 0 || m == 1|| m == 6|| m == 8)
        printf("pon\n");
    else
        printf("hon\n");

    return 0;
}