leetcode: [https://leetcode.com/ly2015CNTJ/](https://leetcode.com/ly2015CNTJ/)

codeforces: [http://codeforces.com/profile/JaxLiu](http://codeforces.com/profile/JaxLiu)

| Title                                                  | Category      | Link                                                         | ext_info |
| ------------------------------------------------------ | ------------- | ------------------------------------------------------------ | -------- |
| leetcode - 1255. Maximum Score Words Formed by Letters | backtracking  | [Maximum Score Words Formed by Letters - LeetCode](https://leetcode.com/problems/maximum-score-words-formed-by-letters/) |          |
| leetcode - 162. Find Peak Element                      | binary search | [Find Peak Element - LeetCode](https://leetcode.com/problems/find-peak-element/) |          |
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