n=5
w, h = n, n;

#unpack
#args = [1,n*n+1]
#print range(*args)
#exit(0)


mtrx2 = [[0 for x in range(w)] for y in range(h)]

def listprn(lis):
	for indx in range(0,n):
		print lis[indx]

k=1
xs,ys = 0,0  # x start, y start
done = False

while not done:
	xx,yy=0,0
	for m in range(xs,n-xs):     #fill --->
		mtrx2[ys+yy][xs+xx]=k
		if k < n*n:
			k+=1
		else:
			done = True
			break
		xx+=1
	if done: break
	yy+=1
	xx-=1

	for m in range(xs,n-1-xs):   #fill   right |
		mtrx2[ys+yy][xs+xx]=k
		if k < n*n:
			k+=1
		else:
			done = True
			break
		yy+=1
	if done: break
	yy-=1
	xx-=1

	for m in range(xs,n-1-xs):   #fill <---
		mtrx2[ys+yy][xs+xx]=k
		if k < n*n:
			k+=1
		else:
			done = True
			break
		xx-=1
	if done: break
	xx+=1
	yy-=1

	for m in range(xs,n-2-xs):   #fill | left
		mtrx2[ys+yy][xs+xx]=k
		if k < n*n:
			k+=1
		else:
			done = True
			break
		yy-=1
	if done: break
	xs+=1   # shift start x,y
	ys+=1

listprn(mtrx2)

exit(0)