class Temp{

public:

    Temp(){

        ++N;

        sum+=N;

    }

    static void Reset(){

        N = ;

        sum = ;

    }

    static int getSum(){

        return sum;

    }

private:

    static int N;

    static int sum;

};

int Temp::N = ;

int Temp::sum = ;

int sum(int n){

    Temp::reset();

    Temp * a = new Temp[n];

    delete []a;

    return Temp::getSum();

}