#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
int main()
{
    int N,M,x=1,y=1,k=0,p=1;
    cin >> N;
    M = N;
    int temp=0;
    //dynamic
    int** ptrArr = new int* [M]; //array of pointers to rows; column
    for (int i = 0; i < N; i++) {
        ptrArr[i] = new int[N]; //ptrArr[i] == array name == pointer

    }
    cout << "Enter " + std::to_string(N) + " elements and press Enter" << endl;
    cout << "(" + std::to_string(M) + " times)" << endl;

        for (int j = 1; j < N*N+1; j++) {
            ptrArr[y-1][x-1]=j; //Y - столбец , X - строка.
            switch(k%4)
            {
                case 0:
                    y++;//вниз
                    if(y==N-p+1)
                        k++;//поворот
                    break;

                case 1:
                    x++;//вправо
                    if(x==N-p+1)
                        k++;//поворот
                     break;
                case 2:
                    y--;//вверх
                    if (y==p){
                        k++;//поворот
                    }
                    break;
                case 3:
                    x--;//влево
                    if(x==p+1)
                    {
                        p++;
                        k++;//поворот
                    }
            }

    }
    cout << temp <<endl;
    for (int i = 0; i < M; i++) {
        for (int j = 0; j < N; j++) {
            cout <<setw(4)<< ptrArr[i][j] << " ";
        }
        cout << endl;
    }
}