#include <stdio.h>
#include <stdlib.h>

void print(int n, int **grid)
{
    int i, j;
    for(i=0; i<n; i++)
    {
        for(j=0; j<n; j++)
        {
            printf("%3d ", grid[i][j]);
        }
        printf("\n");
    }
}

void fillin(int n, int ***grid){
    int val = 1, loop = 0, z, bound = n, i = 0, j = 0;
    *grid = malloc(n*sizeof(int*));
    for(i = 0; i < n; i++)
    {
        *(*grid+i)=malloc(n*sizeof(int));

    }

    for(z = 0; z < n/2; z++)
    {
        for(i = loop; i < bound-loop; i++)
        {
            (*grid)[i][j] = val;
            val++;
        }
        i--;
        val--;
        for(j = loop; j < bound-loop; j++)
        {
            (*grid)[i][j] = val;
            val++;
        }
        j--;
        val--;
        for(; i > 0+loop; i--)
        {
            (*grid)[i][j] = val;
            val++;
        }
        for(; j > 0+loop; j--)
        {
            (*grid)[i][j] = val;
            val++;
        }
        j++;
        loop++;
    }

    if(n % 2 != 0)
    {
        (*grid)[n/2][n/2] = n*n;

    }
    return grid;
}

int main()
{
    int n, i, j, **grid;
    printf("Iveskite skaiciu N - ");
    scanf("%d", &n);
    fillin(n, &grid);
    print(n, grid);
    return 0;
}