• I exist
• I run a blog
• I do Python tutoring for college students. Advanced or self-motivated high school students will also be accepted. Contact me at codegeek98@gmail.com if interested.

Answers I gave that I think were exceptionally correct:

• Factoring modulus from just (e, d) (RSA Cryptosystem)
• Streaming to a file (JavaScript)
• Random permutations from a stream cipher (Python)
• Bitwise-invert a file without 3rd-party software
• Waze "PVSP" exclusion (US Law)
• ORDERED_NODE_ITERATOR_TYPE iterable (JavaScript/XPath)
• Modular arithmetic (SageMath)
• RAM-efficient GCD (JavaScript BigInt)
• Direct link to retweet (Web Browsers)
• Gamertag to XUID (Bash/cURL)
• Destructors (JavaScript)
• Password OR Unix Socket auth (MariaDB)