#include <bits/stdc++.h>
using namespace std;

int main(){
  int n;
  scanf("%d", &n);
  
  switch(n % 10){
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      puts("hon");
      breake;
    case 0:
    case 1:
    case 6:
    case 8:
      puts("pon");
      break;
    case 3:
      puts("bon");
      break;
  }
}
