update readme

Author: hogan-tech

.github/Question List.txt

@@ -4,4 +4,5 @@
 0004-median-of-two-sorted-arrays python hard
 0005-longest-palindromic-substring python medium
 
-1380-lucky-numbers-in-a-matrix python easy
+1380-lucky-numbers-in-a-matrix python easy
+1605-find-valid-matrix-given-row-and-column-sums python medium

README.md

@@ -443,6 +443,7 @@ The solutions are organized as follows:
 | 1582 | [Special Positions in a Binary Matrix](https://leetcode.com/problems/special-positions-in-a-binary-matrix/)                                                                             | [Python](./1582-special-positions-in-a-binary-matrix/1582-special-positions-in-a-binary-matrix.py)                                                                                                                                                                             | [Easy](./1582-special-positions-in-a-binary-matrix/README.md)                                         |
 | 1584 | [Min Cost to Connect All Points](https://leetcode.com/problems/min-cost-to-connect-all-points/)                                                                                         | [Python](./1584-min-cost-to-connect-all-points/1584-min-cost-to-connect-all-points.py)                                                                                                                                                                                         | [Medium](./1584-min-cost-to-connect-all-points/README.md)                                             |
 | 1598 | [Crawler Log Folder](https://leetcode.com/problems/crawler-log-folder/)                                                                                                                 | [Python](./1598-crawler-log-folder/1598-crawler-log-folder.py)                                                                                                                                                                                                                 | [Easy](./1598-crawler-log-folder/README.md)                                                           |
+| 1605 | [Find Valid Matrix Given Row and Column Sums](https://leetcode.com/problems/find-valid-matrix-given-row-and-column-sums/)                                                               | [Python](./1605-find-valid-matrix-given-row-and-column-sums/1605-find-valid-matrix-given-row-and-column-sums.py)                                                                                                                                                               | [Medium](./1605-find-valid-matrix-given-row-and-column-sums/README.md)                                |
 | 1608 | [Special Array With X Elements Greater Than or Equal X](https://leetcode.com/problems/special-array-with-x-elements-greater-than-or-equal-x/)                                           | [Python](./1608-special-array-with-x-elements-greater-than-or-equal-x/1608-special-array-with-x-elements-greater-than-or-equal-x.py)                                                                                                                                           | [Easy](./1608-special-array-with-x-elements-greater-than-or-equal-x/README.md)                        |
 | 1609 | [Even Odd Tree](https://leetcode.com/problems/even-odd-tree/)                                                                                                                           | [Python](./1609-even-odd-tree/1609-even-odd-tree.py)                                                                                                                                                                                                                           | [Medium](./1609-even-odd-tree/README.md)                                                              |
 | 1611 | [Minimum One Bit Operations to Make Integers Zero](https://leetcode.com/problems/minimum-one-bit-operations-to-make-integers-zero/)                                                     | [Python](./1611-minimum-one-bit-operations-to-make-integers-zero/1611-minimum-one-bit-operations-to-make-integers-zero.py)                                                                                                                                                     | [Hard](./1611-minimum-one-bit-operations-to-make-integers-zero/README.md)                             |