#include<bits\stdc++.h>

int main (){
    int N;
    scanf("%d", &N);
  
   if (N % 10 ==2 && N%10 ==4 && N %10 == 5 && N% 10 
         == 9 && N% 10 == 9 ){
        cout << "hon" << endl;
  }
  else if (N % 10 == 0 && N %10 == 1 && N % 10 == 6 && N % 10 == 8 ){
        cout << "pon" << endl;
}
else if (N % 10 == 3){
      cout << "bon" << endl;
}
}