H, W = map(int, input().split())

ans = 0
grid = []

if H % 2 == 0 and W % 2 == 0:
    ans = H * W
    grid = [[1] * W for _ in range(H)]
elif H % 2 == 0 and W % 2 == 1:
    ans = H * (W - 1)
    grid = []
    for _ in range(H):
        row = [1] * (W - 1) + [0]
        grid.append(row)
elif H % 2 == 1 and W % 2 == 0:
    ans = (H - 1) * W
    grid = [[1] * W for _ in range(H - 1)] + [[0] * W]
else:
    ans = H * W - 1
    grid = [[1] * W for _ in range(H)]
    grid[-1][-1] = 0

print(ans)
for row in grid:
    print(' '.join(map(str, row)))