Update README.md

Author: kamyu104

README.md

@@ -1001,7 +1001,7 @@
 928 | [Minimize Malware Spread II](https://leetcode.com/problems/minimize-malware-spread-ii/)  | [C++](./C++/minimize-malware-spread-ii.cpp) [Python](./Python/minimize-malware-spread-ii.py) | _O(n^2)_| _O(n)_| Hard           || Union Find | 
 959 | [Regions Cut By Slashes](https://leetcode.com/problems/regions-cut-by-slashes/)  | [C++](./C++/regions-cut-by-slashes.cpp) [Python](./Python/regions-cut-by-slashes.py) | _O(n^2)_| _O(n^2)_| Medium           || Union Find | 
 959 | [Regions Cut By Slashes](https://leetcode.com/problems/regions-cut-by-slashes/)  | [C++](./C++/regions-cut-by-slashes.cpp) [Python](./Python/regions-cut-by-slashes.py) | _O(n^2)_| _O(n^2)_| Medium           || Union Find | 
-990 | [Satisfiability of Equality Equations](https://leetcode.com/problems/satisfiability-of-equality-equations/) | [C++](./C++/satisfiability-of-equality-equations.cpp) [Python](./Python/satisfiability-of-equality-equations.py) | _O(n)_ | _O(1)_ | Medium           | Union Find |
+990 | [Satisfiability of Equality Equations](https://leetcode.com/problems/satisfiability-of-equality-equations/) | [C++](./C++/satisfiability-of-equality-equations.cpp) [Python](./Python/satisfiability-of-equality-equations.py) | _O(n)_ | _O(1)_ | Medium           || Union Find |
 
 ## Geometry
 |  #  | Title           |  Solution       |  Time           | Space           | Difficulty    | Tag          | Note|