#include<stdio.h>
int main()
{
    int i,j,i1,j1,x,n,a[101][101];
    printf("Enter an odd number:");
    scanf("%d",&n);
    if(n%2==0)
    printf("Input error");
    else
    {
        for(i=1;i<=n;i++)
        for(j=1;j<=n;j++)
        a[i][j]=0;
        i=1;
        j=(n+1)/2;
        x=1;
        while(x<=n*n)
        {
                     a[i][j]=x;
                     x++;
                     i1=i;
                     j1=j;
                     i=i-1;
                     j=j-1;
                     if(i==0)i=n;
                     if(j==0)j=n;
                     if(a[i][j]!=0)
                     {
                                   i=i1+1;
                                   j=j1;
                                   }
           }
           for(i=1;i<=n;i++)
           {
                            for(j=1;j<=n;j++)
                            printf("%4d",a[i][j]);
                            printf("\n");
                            }
                            }
           scanf("%d",&n);
           return 0;
}