- https://zxi.mytechroad.com/blog/greedy/leetcode-984-string-without-aaa-or-bbb/
- https://zxi.mytechroad.com/blog/bit/leetcode-982-triples-with-bitwise-and-equal-to-zero/
- https://zxi.mytechroad.com/blog/dynamic-programming/leetcode-983-minimum-cost-for-tickets/
- https://zxi.mytechroad.com/blog/hashtable/leetcode-981-time-based-key-value-store/