6 Existing work ● Disadvantage2 rely on core operation Insertion with O(n)or o(n)time Drop D old route Pick D Drop"Drop new order PickA Drop a Pick bc Insertion Drop D old route Pick D Drop B new route PickA Drop a Drop c Pick BcExisting work ⚫ Disadvantage 2: ⚫ rely on core operation: Insertion with O 𝑛 2 or O 𝑛 3 time 6 Pick A Drop A Pick BC Drop B Drop C Pick D Drop D Pick A Drop A Pick BC Drop B Drop C Pick D Drop D old route new order old route new route Insertion