include

int main() { int n; scanf("%d", &n); int size = (2 * n) - 1; int out[size][size]; int i, j;

// Fill the matrix with the concentric layer numbers
for (i = 0; i < size; i++)
{
    for (j = 0; j < size; j++)
    {
        // Calculate the minimum distance to any edge
        int p = i < size - i - 1 ? i : size - i - 1;
        p = p < (j < size - j - 1 ? j : size - j - 1) ? p : (j < size - j - 1 ? j : size - j - 1);
        out[i][j] = n - p;
    }
}

// Print the matrix with space-separated values
for (i = 0; i < size; i++)
{
    for (j = 0; j < size; j++)
    {
        printf("%d ", out[i][j]);
    }
    printf("\n");
}

return 0;

}