def make_map(list_child_parent):
    has_parent = set()
    all_items = {}
    for child, parent in list_child_parent:
        if parent not in all_items:
            all_items[parent] = {}
        if child not in all_items:
            all_items[child] = {}
        all_items[parent][child] = all_items[child]
        has_parent.add(child)

    result = {}
    for key, value in all_items.items():
        if key not in has_parent:
            result[key] = value
    return result