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)
if n % 2 == 1 and m % 2 == 1:
    print(n * m - max(n, m))
    ans = [[1] * m for _ in range(n)]
    for i in range(min(n, m)):
        ans[i][i] = 0
    for i in range(min(n, m), n):
        ans[i][0] = 0
    for i in range(min(n, m), m):
        ans[0][i] = 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
else:
    print(x * y)
for row in ans:
    print(*row)