def METHOD_NAME(signatures):
    """Make some chunks with signatures,
    the total length of each chunk must be <= 1536"""
    total = sum(len(s) for s in signatures)
    M = 1536
    n = total // M + 1
    res = [[M, []] for _ in range(n)]
    for s in signatures:
        L = len(s)
        if L > M:
            continue
        added = False
        for i in res:
            if L < i[0]:
                added = True
                i[1].append(s)
                i[0] -= L
                break
        if not added:
            res.append([M - L, [s]])
    res = [x for _, x in res if len(x)]
    return res, max(len(x) for x in res)