{c}

Bibliography:
* https://www.turing.com/kb/foobar-google-secret-hiring-technique
* https://www.reddit.com/r/leetcode/comments/yd671c/did_you_ever_get_the_google_foobar_challenge/
* <GitHub>:
  * https://github.com/n3a9/google-foobar
  * https://github.com/topics/foobar-solutions
  * https://github.com/topics/google-foobar

\Video[https://www.youtube.com/watch?v=pBL3ZUUxS44]
{title=Attempting Google's hidden coding challenge by codemastercpp (2022)}

\Video[https://www.youtube.com/watch?v=w1QDgA3D2eY]
{title=Google's Secret Programming Challenge by srcmake (2018)}


Google Foobar