#include <stdio.h>

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

