| Traveling salesman problem | ･･･ | It can not be solved after 10 billion years!? |
| Redelivery and centralization | ･･･ | The remedy we thought was ... |
| Traveling salesman problem | ･･･ | It can not be solved after 10 billion years!? |
| Redelivery and centralization | ･･･ | The remedy we thought was ... |
background image:Cited from 写真AC, Based on 利用規約【check:2017/11/4】
