#include <iostream>
#include <ctime>
using namespace std;
class matrix
{
private:
    int** a;
    int n, m;
    void friend change(int** A, int N, int M);
public:
    matrix()
    {
        a = 0;
        n = 0;
        m = 0;
    }
    matrix(int N, int M)
    {
        n = N;
        m = M;
        a = new int* [n];
        for (int i = 0; i < n; ++i)
        {
            a[i] = new int[m];
            for (int j = 0; j < m; ++j) {
                a[i][j] = rand()%10;
                cout << a[i][j]<<" ";
            }
            cout << endl;
        }
    }
    void change(int** A, int N, int M);
};

class coord {
private:
    pair<int, int>cd;
    void friend change(pair<int, int>cd);
public:
    coord() {
        cd=make_pair(0,0);
    };
    coord(int P, int L) {
        int p = P;
        int l = L;
        cd = make_pair(p, l);
        cout <<"\n" << cd.first << " " << cd.second << endl;
    };
    void change(pair<int, int>);
};

void change(int** A, int N, int M, pair<int, int>) {
    int c = N;
    int g = M;
    int h = int* [c];
    for (int i = 0; i < c; ++i)
    {
        h[i] = new int[c];
        for (int j = 0; j < g; ++j) {
            h[i][j] = rand() % 10;
            cout << h[i][j] << " ";
        }
        cout << endl;
    }
};
int main()
{
    srand(time(0));
    setlocale(LC_ALL, "Russian");
    matrix arr(4, 4);
    coord a(2, 4);
    coord b(1, 3);
    return 0;
}