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diff --git a/leetcode-videos/2140-2149/README.md b/leetcode-videos/2140-2149/README.md
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+# LeetCode 2140-2149 题解视频
+
+- 2140. Solving Questions With Brainpower — `2140-solving-questions-with-brainpower.mp4`
+- 2141. Maximum Running Time of N Computers — `2141-maximum-running-time-of-n-computers.mp4`
+- 2142. The Number of Passengers in Each Bus I — `2142-the-number-of-passengers-in-each-bus-i.mp4`
+- 2143. Choose Numbers From Two Arrays in Range — `2143-choose-numbers-from-two-arrays-in-range.mp4`
+- 2144. Minimum Cost of Buying Candies With Discount — `2144-minimum-cost-of-buying-candies-with-discount.mp4`
+- 2145. Count the Hidden Sequences — `2145-count-the-hidden-sequences.mp4`
+- 2146. K Highest Ranked Items Within a Price Range — `2146-k-highest-ranked-items-within-a-price-range.mp4`
+- 2147. Number of Ways to Divide a Long Corridor — `2147-number-of-ways-to-divide-a-long-corridor.mp4`
+- 2148. Count Elements With Strictly Smaller and Greater Elements — `2148-count-elements-with-strictly-smaller-and-greater-elements.mp4`
+- 2149. Rearrange Array Elements by Sign — `2149-rearrange-array-elements-by-sign.mp4`