Google Hash Code 2018 recap

Google Hash Code is a coding competition where a team has 5 hours to solve one optimization/approximate problem. I competed last year and got 1-st and 6-th in the qualification and final round respectively. I will talk about problems, possible approaches, and give general advice and hints. Register for Google Hash Code 2019 here: https://codingcompetitions.withgoogle.com/. (Quantum programming stream is canceled.) I'm going to stream on Twitch at the same time: https://www.twitch.tv/errichto. Please ask questions in live chat. I will be happy to answer them. If you miss the stream, the video will be available later anyway. git repository: https://github.com/Errichto/youtube Facebook: https://www.facebook.com/errichto Twitter: https://twitter.com/errichto Competitive Programming Discord: https://discordapp.com/invite/UzaURu7 What is Competitive Programming? https://en.wikipedia.org/wiki/Competitive_programming I'm known as Errichto. I compete in and organize programming competitions. I'm a finalist of ACM-ICPC, Topcoder Open, Facebook Hacker Cup and Google Code Jam. I got a second place in Google Code Jam 2018. Watch me if you want to practice Competitive Programming, algorithms or you want to learn for a coding interview. I share my thought process, explain everything, and mention similar problems that I know or techniques/algorithms that could be used too. Learn from me and grow your rating on Codeforces!