mod = 998244353


def main():
    import sys
    input = sys.stdin.readline

    H, W = map(int, input().split())
    H2 = H % 2
    W2 = W % 2
    if H2 == W2 == 0:
        print(H * W)
        ans = [[1] * W for _ in range(H)]
        for h in range(H):
            print(*ans[h])
    elif H2 == W2 == 1:
        assert False
    elif H2 == 1:
        print((H - 1) * W)
        ans = [[1] * W for _ in range(H)]
        ans[-1] = [0] * W
        for h in range(H):
            print(*ans[h])
    else:
        print(H * (W - 1))
        ans = [[1] * W for _ in range(H)]
        for h in range(H):
            ans[h][-1] = 0
        for h in range(H):
            print(*ans[h])


if __name__ == '__main__':
    main()