#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>

int main() {
  int n;
  scanf("%d", &n);
  int n1, n2;
  n1 = n/100;
  n2 = n/10-n1*10;
  n = n - n1*100 -n2*10;
  if(n == 2|| n== 4|| n == 5||n==7||n == 9) {
    printf("hon\n");
  }else if(n == 0||n==1||n==6||n==8) {
    printf("pon\n");
  }else {
    printf("bon\n");
  }
  return 0;
}
