Winning Top 3 at Facebook HackerCup Finals 2020! ($5000 prize!)

This is a full screencast of my winning 3rd place in the Facebook HackerCup 2020 Finals. I solved 5 of the 6 problems, and only a little slower than the winner. Congrats to Gennady Korotkevich (tourist) for taking first place!

Scoreboard (with code download): https://www.facebook.com/codingcompetitions/hacker-cup/2020/final-round/scoreboard
Scoreboard Reveal Video: https://www.facebook.com/hackercup/videos/3419236791531577/

HackerCup has several rounds of programming contests, and only the top 25 worldwide advanced to the finals. Previous rounds screencasts:
- Round 1: https://youtu.be/0bb7i-hHmd0 (bonus: https://youtu.be/CwEJmC3RWOI)
- Round 2: https://youtu.be/zZ3icDpfpeg
- Round 3: https://youtu.be/QzF8Rke0N8g

If you're interested in learning and participating in competitive programming, there are a lot of resources and contest available:
- Google Code Jam: https://codingcompetitions.withgoogle.com/codejam
- Facebook HackerCup: https://www.facebook.com/codingcompetitions/hacker-cup/
- Codeforces: https://codeforces.com
- TopCoder: https://www.topcoder.com/community/competitive-programming/how-to-compete
- AtCoder: https://atcoder.jp
- ProjectEuler: https://projecteuler.net
- Programming Contest calendar: https://clist.by

My Setup:
I have a ThinkPad X1 Carbon (Gen 6), and I'm currently using a Cherry MX Blue keyboard and an external monitor. The font may be a bit small, but you can download my code directly from the scoreboard to read it at your leisure.

0:00 Introduction
2:30 Start of Contest
3:02 Problem A: Cryptoconference
25:10 Problem B: Somebody Else's Problem
44:40 Problem C/D/E (Reading/Thinking)
55:50 Problem D: Spider Spring (Coding)
1:25:28 Problem C/E (Thinking)
1:39:15 Problem C: Pond Precipitation (Coding)
1:54:35 Problem F (Reading)
2:04:30 Problem E: Tree Training (Coding)
2:56:34 Problem F: Cake-Cutting Committee (Thinking)
4:02:30 End of Contest