n, m = map(int, input().split())
if n == 1 or m == 1:
    ans = [[0] * m for _ in range(n)]
    print(0)
    for row in ans:
        print(*row)
    exit(0)
x = n // 2 * 2
y = m // 2 * 2
ans = [[0] * m for _ in range(n)]
for i in range(x):
    for j in range(y):
        ans[i][j] = 1
if n % 2 == 1 and m % 2 == 1:
    print(x * y + 2)
    ans[-1][-1] = 1
    ans[-1][-2] = 1
    ans[-2][-1] = 1
    ans[-2][-2] = 0
else:
    print(x * y)
for row in ans:
    print(*row)