#include
     
      #include
      
       #include
       
        #define max 20using namespace std;int a[max][max];int main(){	int x, y, n, tot = 0;	cin >> n;	memset(a, 0, sizeof(a));	tot = a[x = 0][y = n - 1] = 1;	while (tot
        
         = 0 && !a[x][y - 1]) a[x][--y] = ++tot;		while (x - 1>=0 && !a[x - 1][y])a[--x][y] = ++tot;		while (y + 1 < n&&!a[x][y + 1]) a[x][++y] = ++tot;	}	for (int i = 0; i < n; i++)	{		for (int j = 0; j < n; j++)		{			cout << a[i][j] << " ";		}		cout << endl;	}		system("pause");	return 0;}