🔗 Broken external links (7)

[github-actions]

🔗 Weekly External Link Check — Broken URLs

7 broken external link(s) found (120 OK).

URL	Status	Referenced by
https://www.topcoder.com/	HTTP 403 Forbidden (GET)	interview/07_推荐资源.md
https://en.cppreference.com/w/cpp/atomic/memory_order	HTTP 403 Forbidden (GET)	ccpp/concurrency/memory_order/index.md
https://leetcode.com/	HTTP 403 Forbidden (GET)	interview/credits.md
https://dl.acm.org/doi/pdf/10.1145/356635.356640	HTTP 403 Forbidden (GET)	ccpp/cpp/abseil-hints.md
https://www.hackerrank.com/	HTTP 500 Internal Server Error	interview/07_推荐资源.md
https://en.cppreference.com/w/cpp/thread/yield	HTTP 403 Forbidden (GET)	ccpp/concurrency/yield/index.md
https://blog.csdn.net/ZCShouCSDN/article/details/80090802	HTTP 521	network/osi_phy_mac.md

How to fix

• Permanent 4xx: URL is gone. Either delete the link, or replace with a working fallback (e.g. project root, docs site).

• 5xx/403/521: usually transient (Cloudflare, server error). Re-run in a few days.

python3 scripts/link_check.py --external --concurrency 8