#include <iostream>
#include <iomanip>

using namespace std;

void alloc_mem(int **a, int n)
{
    a = new int *[n];
    for (int i = 0; i < n; i++)
        a[i] = new int[n];
}

void del_mem(int **a, int n)
{
    for (int i = 0; i < n; i++)
        delete[] a[i];
    delete a;
    a = nullptr;
}

void init_a(int **a, int n) //A initialization
{
    cout << "Enter matrix A:\n";
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            cin >> a[i][j];
}

void gen_b(int **a, int **b, int n) //B elem generation
{
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            if (a[i][j] >= 0)
                b[i][j] = a[i][j];
            else
                b[i][j] = 1;
}

void sum_c(int** a, int** b, int ** c, int n)//init C
{
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            c[i][j] = a[i][j] + b[i][j];
}

void disp_m(int** m, int n)
{
    for (int i = 0; i < n; i++){
        for (int j = 0; j < n; j++)
            cout << setw(4) << m[i][j];
        cout << endl;
    }
}

void display(int** a, int** b, int** c, int n)
{
    char ch = 'A';
    int** m_list[3] = {a, b, c};
    for (int k = 0; k < 3; k++){
        cout << "Matrix " << char(ch+k)<< ":\n";
        for(int i = 0; i < n; i++)
            for(int j = 0; j < n; j++)
                disp_m(m_list[k]);
    }
}

int main()
{
    cout << "Enter n: ";
    int n;
    cin >> n;
    int** a, **b, **c;
    alloc_mem(a, n);
    alloc_mem(b, n);
    alloc_mem(c, n);

    init_a(a, n);
    gen_b(a, b, n);
    sum_c(a, b, c, n);

    display(a, b, c, n);

    del_mem(a, n);
    del_mem(b, n);
    del_mem(c, n);
    return 0;
}