package nested_list;

struct nested_list_t
{
    byte arbitrary;
    int32_t nsegments;
    segment_t segments[nsegments];
}

struct pair_t
{
    int64_t left;
    double right;
}

struct segment_t
{
    int32_t nsingles;
    int32_t singles[nsingles];

    int32_t npairs;
    pair_t pairs[npairs];
}