import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES")
no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO")
#######################################################################

h,w = na()
a = [[1 for j in range(w)]for i in range(h)]
ans = h*w
if h%2 and w%2:
    for i in range(max(h,w)):
        x = min(i, h-1)
        y = min(i, w-1)
        a[x][y] = 0
        ans -= 1
elif h%2:
    for i in range(w):
        a[0][i] = 0
        ans -= 1
elif w%2:
    for i in range(h):
        a[i][0] = 0
        ans -= 1
print(ans)
for i in a:
    print(*i)