#include <stdio.h>

int main(void){

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

  return 0;
}