#include<stdio.h>

int main(void){
	int N;
  	scanf("%d",&N);
  
  	N = N % 10;
  	//printf("%d\n",N);
    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;
}