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