同学们好，本网站近期遭到不明身份的黑客的频繁攻击，为了安全起见，我们已经将平台数据（截止到9月16日上午）迁移到了更安全的地址：https://cs.thisdlit.site
请同学们尽快将近期作业提交到新平台。
Hello everyone,
Due to frequent attacks by unidentified hackers, we have migrated the platform data (as of the morning of September 16) to a more secure address: https://cs.thisdlit.site for safety reasons.
Please submit your recent assignments on the new platform as soon as possible.