#include <iostram>
int main
{
    int N;
    cin >> N;
    N=N%10;
    if(N==3){ cout << "bon" ;
    }
    else if(N==0 || N==1 || N==6 || N==8){
              cout << "pon";
    }
    else      cout << "hon";
    return 0;
    }