RT

#include<iostream>
#include<cstring>
using namespace std;
int n,k;
long long a[1005][1005];
int main()
{
	cin>>n;
	a[1][n/2+1]=1;
	k=1;
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		{
			k++;
			if(a[1][j]==k-1&&a[1][n]!=k-1)
			{
				a[n][j-1]=k;
			}
			else if(a[i][n]=k-1&&a[1][j]!=k-1)
			{
				a[i-1][n]=k;
			}
			else if(a[1][n]=k-1)
			{
				a[2][n]=k;
			}
			else if(a[1][j]!=k-1&&a[i][n]!=k-1)
			{
				if(a[i][j]==k-1)
				{
					if(a[i+1][j+1]==0&&i+1<=n&&j+1<=n)
					{
						a[i+1][j+1]=k;
					}
					else
					{
						a[i-1][j]=k;
					}
				}
			}
		}
	}
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		{
			cout<<a[i][j]<<" ";
		}
		cout<<endl;
	}
	return 0;
}