4_4_1

#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <iomanip>
using namespace std;
class Base
{
public:
    int N;
    int* arr;
    void in_out()
    {
        cin >> N;
        arr = new int[N];
        for (int i = 0; i < N; i++)
            cin >> arr[i];
    }
};
class Cl1 : public Base
{
public:
    int func()
    {
        int min;
        min = arr[0];
        for (int i = 1; i < N; i++)
            min = min - arr[i];
        return min;
    }
};
class Cl2 : public Cl1
{
public:
    int func()
    {
       int  sum = 0;
        for (int i = 0; i < N; i++)
            sum += arr[i];
        return sum;
    }

};
class Cl3 : public Cl2
{
public:

    void in_out()
    {
        cout << "Array dimension: " << N<<endl<<"The original array:";
        for (int i = 0; i < N; i++)
            cout << setw(5) << arr[i];
        cout << endl<< "Min: "<< Cl1::func()<<endl<<"Sum: "<<Cl2::func();
    }

};
int main()
{
    Cl3* a;
    a= new Cl3();

    a->Base::in_out();
    a->Cl3::in_out();
}