/* kadai 3_2
   nabe9393 */

#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;
}