H, W = map(int, input().split())
G = [[0] * W for i in range(H)]
ans = 0
for i in range(H - 1):
    for j in range(W - 1):
        if G[i][j] + G[i][j + 1] + G[i + 1][j] + G[i + 1][j + 1] == 0:
            ans += 4
            G[i][j] = 1
            G[i][j + 1] = 1
            G[i + 1][j] = 1
            G[i + 1][j + 1] = 1
print(ans)
for i in range(H):
    print(*G[i])