# include <iostream>
# include <stdexcept>
using namespace std;

struct BadIndex : public std::exception {} ;
const int ARRAY_LENGTH = 10 ;

class Homework
{
public :
    int a ;
    double b ;
    string c ;
    Homework(int a , double b , string c) ;

};

Homework :: Homework(int a , double b , string c)
{
    this->a = a ;
    this->b = b ;
    this->c = c ;
}

template<typename T>
T getArrayElement(Homework c , int len , int index)
{
    if(0 <= index && index < len)
    {
        Homework bbb(1 , 3.3 , "ok") ;
        return bbb ;
    }
    else if(index <= -1 && index >= -(len-1))
    {
        Homework bbb(2 , 3.3 , "ok") ;
        return bbb ;
    }
    else
        throw BadIndex() ;
}


int main()
{
    Homework homework(3 , 5.646 , "hw") ;
    int index = 0 ;
    cin >> index ;

    try
    {
        Homework result = getArrayElement<Homework>(homework , ARRAY_LENGTH , index) ;
        cout << result.a ;
    }

    catch (BadIndex e)
    {
        cout << "Bad index !\n" ;
    }

    return 0;
}