#include <ctime>
#include <cstdlib>
#include <iostream>
using namespace std;
int main()
{
    //setlocale(LC_ALL, "russian");
    srand((time(0)));
    int n;
    cout << "введите размер массива: ";
    cin >> n;
    int** A = new int* [n];
    
    cout << endl;
 
    for (int i = 0; i < n; i++)
    {
        A[i] = new int[n];
        for (int j = 0; j < n; j++) {
            A[i][j] = rand() % 100;
            cout << A[i][j] << " ";

        }
        cout << endl;
    }
    cout << endl << endl;
 
    for (int i = 0; i < n-1; i+=2)
    {
        int * tmp = A[i];
        A[i] = A[i+1];
        A[i+1] = tmp;
    }

    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++) {
            cout << A[i][j] << " ";
        }
        cout << endl;
    }


    for (int i = 0; i < n; i++)
    {
        delete A[i];
    }
    delete[] A;
    return 0;
}