/* A - ∴ (Therefore) */

#include <stdio.h>

int main(void){
  int N;
  scanf("%d", &N);
  if(N % 10 == 2 || N % 10 == 4 || N % 10 == 5 || N % 10 == 7 || N % 10 == 9){
    printf("hon\n");
  }else if(N % 10 == 0 || N % 10 == 1 || N % 10 == 6 || N % 10 == 8){
    printf("pon\n");
  }else{
    printf("bon\n");
  }
}
