H, W = map(int, input().split())
G = [[0] * W for _ in range(H)]

if H == 1 or W == 1:
    ans = 0
elif H % 2 == 0 and W % 2 == 0:
    ans = H * W
    G = [[1] * W for _ in range(H)]
elif H % 2 == 0:
    ans = 0
    for i in range(H):
        for j in range(W-1):
            G[i][j] = 1
            ans += 1
elif W % 2 == 0:
    ans = 0
    for i in range(H-1):
        for j in range(W):
            G[i][j] = 1
            ans += 1
else:
    ans = 3
    for i in range(H-1):
        for j in range(W-1):
            ans += 1
            G[i][j] = 1
    G[-1][-1] = 1
    G[-2][-1] = 1
    G[-1][-2] = 1
    G[-2][-2] = 0


print(ans)
for g in G:
    print(*g)