h,w=map(int,input().split())
if min(h,w)==0:
  print(0)
  for i in range(h):
    print(*[0]*w)
  exit()

if h%2==0 and w%2==0:
  print(h*w)
  for i in range(h):
    print(*[1]*w)
  exit()

if h%2==0:
  print(h*(w-1))
  for i in range(h):
    print(*[1]*(w-1)+[0])
  exit()

if w%2==0:
  print((h-1)*w)
  for i in range(h-1):
    print(*[1]*w)
  print(*[0]*w)
  exit()

ans=[[1]*w for i in range(h)]

if h<=w:
  print((h-1)*w)
  for i in range(w):
    ans[min(i,h-1)][i]=0

else:
  print(h*(w-1))
  for i in range(h):
    ans[i][min(i,w-1)]=0
    
for i in ans:
  print(*i)