#include <iostream>
#include <stdio.h>
#include <cmath>
#include<ctime>
using namespace std;
int main()
{

    setlocale(LC_ALL, "Russian");
    srand((unsigned)time(NULL));


    int l, r, s = 0;
    cout << "Введите кол-во линий = ";
    cin >> l;
    cout << "Введите кол-во столбцов = ";
    cin >> r;

    if (l > 20 || r > 20 || r < 1 || l < 1)
    {
        return 1;
    }
    double** sglarr;
    int** arr;
    arr = new int* [l+2];
    sglarr = new double* [l+2];
    int i = 0;
    for (int i = 0; i <= l + 1; i++) {
        arr[i] = new int [r+2];
        sglarr[i] = new double[r+2];
    }
    cout << "Введите " << l * r << " элементов матрицы: ";
    for (int i = 1; i <= l; i++)
    {
        for (int j = 1; j <= r; j++)
        {
            cin >> arr[i][j];
        }
    }

    for (int i = 1; i <= l; i++) {
        arr[i][0] = arr[i][r];
        arr[i][r+1] = arr[i][1];
    }
    for (int j = 1; j <= r; j++) {
        arr[0][j] = arr[l][j];
        arr[l+1][j] = arr[1][j];
    }
    arr[0][0] = arr[l][r];
    arr[l+1][r+1] = arr[1][1];
    arr[l+1][0] = arr[1][r];
    arr[0][r+1] = arr[l][1];
    cout << "Элементы массива: " << endl;
    for (int i = 0; i <= l+1; i++)
    {
        for (int j = 0; j <= r+1; j++)
        {
            cout << arr[i][j] << "  ";
        }
        cout << endl;
    }
    cout << endl << endl << endl;

    for (int i = 1; i <= l; i++)
    {
        for (int j = 1; j <= r; j++)
        {
            sglarr[i][j] = (arr[i-1][j-1] + arr[i-1][j] + arr[i-1][j+1] +
                    arr[i][j-1] + arr[i][j+1] + arr[i+1][j-1] + arr[i+1][j] + arr[i+1][j+1])/8.0;
        }
    }
    cout << "Элементы сглаженного массива: " << endl;
    for (int i = 1; i <= l; i++)
    {
        for (int j = 1; j <= r; j++)
        {
            cout << sglarr[i][j] << " ";
        }
        cout << endl;
    }

}