My screencast and commentary of GCJ 2021 1B. Problems and leaderboard: https://codingcompetitions.withgoogle...

0:00 A. Broken Clock
17:50 B. Subtransmutation
34:12 wrong submission
36:38 C. Digit Blocks
56:52 Summary

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FAQ - https://github.com/Errichto/youtube/w...
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