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diff --git a/leetcode-videos/2040-2049/README.md b/leetcode-videos/2040-2049/README.md
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+# LeetCode 2040-2049 题解视频
+
+- 2040. Kth Smallest Product of Two Sorted Arrays — `2040-kth-smallest-product-of-two-sorted-arrays.mp4`
+- 2041. Accepted Candidates From the Interviews — `2041-accepted-candidates-from-the-interviews.mp4`
+- 2042. Check if Numbers Are Ascending in a Sentence — `2042-check-if-numbers-are-ascending-in-a-sentence.mp4`
+- 2043. Simple Bank System — `2043-simple-bank-system.mp4`
+- 2044. Count Number of Maximum Bitwise-OR Subsets — `2044-count-number-of-maximum-bitwise-or-subsets.mp4`
+- 2045. Second Minimum Time to Reach Destination — `2045-second-minimum-time-to-reach-destination.mp4`
+- 2046. Sort Linked List Already Sorted Using Absolute Values — `2046-sort-linked-list-already-sorted-using-absolute-values.mp4`
+- 2047. Number of Valid Words in a Sentence — `2047-number-of-valid-words-in-a-sentence.mp4`
+- 2048. Next Greater Numerically Balanced Number — `2048-next-greater-numerically-balanced-number.mp4`
+- 2049. Count Nodes With the Highest Score — `2049-count-nodes-with-the-highest-score.mp4`