// 易错点3：处理最终结果为空的场景（比如num="10"，k=2）
The first reason is perhaps the most important. If you're concerned about your ISP, housemates, landlord, or someone totally random accessing your data, you could probably benefit from using a VPN. Any sort of activity on an unsecured WiFi network leaves your private information and browsing habits exposed to the world, unless you're using a VPN. Even porn sites can track your activity if you're unprotected. Pornhub tracks IP addresses for example, which means it has the potential to collect information about your site usage. But with a VPN, your IP address will always remain hidden.
Фонбет Чемпионат КХЛ，更多细节参见搜狗输入法2026
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，这一点在服务器推荐中也有详细论述
2. Then, I started a Claude Code session, and asked it to fetch all the useful documentation on the internet about the Z80 (later I did this for the Spectrum as well), and to extract only the useful factual information into markdown files. I also provided the binary files for the most ambitious test vectors for the Z80, the ZX Spectrum ROM, and a few other binaries that could be used to test if the emulator actually executed the code correctly. Once all this information was collected (it is part of the repository, so you can inspect what was produced) I completely removed the Claude Code session in order to make sure that no contamination with source code seen during the search was possible.，更多细节参见搜狗输入法下载
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