#include <stdio.h>
#define MAX 21
void main() {
  int mag[MAX][MAX],i,n,j,k;
  float avg[MAX];

  printf("give me max magic number -->"); scanf("%d",&n);
  if (n > MAX) { printf("over the magic number --> exit\n"); exit(0); }
  i=0; j=(n-1)/2;
  for (k=1; k<=n*n; k++) {
    mag[i][j]=k;
    if (k%n == 0) i=i+1;
    else {
      i=i-1; j=j+1;
      if (i < 0) i=n-1;
      if (j > (n-1)) j=0;
    }
  }
  printf("the %d magic matrix is followed -->\n",n);
  for (i=0; i<n; i++) {
    for (j=0; j<n; j++)
       printf("%3d ",mag[i][j]);
    printf("\n");
  }
}