8.2.1

#include <iostream>
#include <cmath>
#include <string.h>
#include<cstdlib>
#include<ctime>

using namespace std;



int main()
{
    int n,m;
    srand((unsigned)time(0));
    cin>>n;
    cin>>m;
    int **p= new int*[n];

    for (int i=0;i<n;i++)
    {
        p[i]=new int[m];
    }

    for (int i=0;i<n;i++)
        for (int j=0;j<m;j++)
            p[i][j]=rand()%1000;

    for (int i=0;i<n;i++)
    {

        for (int j=0;j<m;j++)
            {
                cout.width(3);
                cout<<p[i][j]<<" ";
            }
            cout<<endl;
    }

    return 0;
}