h, w = map(int, input().split())
a = [[0]*w for _ in range(h)]
for i in range(h):
    for j in range(w):
        if i < h//2*2 and j < w//2*2: a[i][j] ^= 1
ans = (h//2*2)*(w//2*2)
if h*w%2:
    for i in range(h-2, h):
        for j in range(w-2, w): a[i][j] ^= 1
    ans += 2
print(ans)
for s in a: print(*s)