README.md

Author: bestgopher

README.md

@@ -2,7 +2,7 @@
 
 | Total | Easy | Medium | Hard |
 | :----: | :----: | :----: | :----: |
-| 577 | 244 | 305 | 28 |
+| 578 | 245 | 305 | 28 |
 
 ### 题目
 
@@ -409,6 +409,7 @@
 |2159    | 至少在两个数组中出现的值 | [src](https://github.com/rustors/leetcode/blob/main/src/bin/two-out-of-three.rs) | [leetcode](https://leetcode-cn.com/problems/two-out-of-three/) | Easy |
 |2161    | 股票价格波动 | [src](https://github.com/rustors/leetcode/blob/main/src/bin/stock-price-fluctuation.rs) | [leetcode](https://leetcode-cn.com/problems/stock-price-fluctuation/) | Medium |
 |2210    | 找出数组排序后的目标下标 | [src](https://github.com/rustors/leetcode/blob/main/src/bin/find-target-indices-after-sorting-array.rs) | [leetcode](https://leetcode-cn.com/problems/find-target-indices-after-sorting-array/) | Easy |
+|2226    | 环和杆 | [src](https://github.com/rustors/leetcode/blob/main/src/bin/rings-and-rods.rs) | [leetcode](https://leetcode-cn.com/problems/rings-and-rods/) | Easy |
 |2233    | 股票平滑下跌阶段的数目 | [src](https://github.com/rustors/leetcode/blob/main/src/bin/number-of-smooth-descent-periods-of-a-stock.rs) | [leetcode](https://leetcode-cn.com/problems/number-of-smooth-descent-periods-of-a-stock/) | Medium |
 |2261    | 分组得分最高的所有下标 | [src](https://github.com/rustors/leetcode/blob/main/src/bin/all-divisions-with-the-highest-score-of-a-binary-array.rs) | [leetcode](https://leetcode-cn.com/problems/all-divisions-with-the-highest-score-of-a-binary-array/) | Medium |
 |2279    | 拆分成最多数目的正偶数之和 | [src](https://github.com/rustors/leetcode/blob/main/src/bin/maximum-split-of-positive-even-integers.rs) | [leetcode](https://leetcode-cn.com/problems/maximum-split-of-positive-even-integers/) | Medium |