#include<stdio.h>

int main() {
   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;
}
