Update README with LeetCode Daily Challenge

Author: jeremymanning

README.md

@@ -282,6 +282,7 @@ _**Note:** Our group is currently taking a break from grinding leetcode. The tab
 | March 26, 2025 | [2033](https://leetcode.com/problems/minimum-operations-to-make-a-uni-value-grid/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2033) | 🟡 Medium |
 | March 27, 2025 | [2780](https://leetcode.com/problems/minimum-index-of-a-valid-split/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2780) | 🟡 Medium |
 | March 28, 2025 | [2503](https://leetcode.com/problems/maximum-number-of-points-from-grid-queries/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2503) | 🔴 Hard |
+| March 29, 2025 | [2818](https://leetcode.com/problems/apply-operations-to-maximize-score/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2818) | 🔴 Hard |
 
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