Update README.md

Author: rajatag03

README.md

@@ -16,6 +16,7 @@ Number | Name of Problem | Leetcode Link | Video Link | Code
 1071 | Greatest Common Divisor of Strings | https://leetcode.com/problems/greatest-common-divisor-of-strings/description/ | https://youtu.be/41iKYE0n0PQ | https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1071.%20Greatest%20Common%20Divisor%20of%20Strings
 1340 | Jump Game V | https://leetcode.com/problems/jump-game-v/ | https://youtu.be/pQXbujZLTv0 | https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1340.%20Jump%20Game%20V
 1510 | Stone Game IV | https://leetcode.com/problems/stone-game-iv/ | https://youtu.be/Gcg_a3r8FA0 | https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1510.%20Stone%20Game%20IV
+1523 | Count Odd Numbers in an Interval Range | https://leetcode.com/problems/count-odd-numbers-in-an-interval-range/description/ | https://youtu.be/HxI78QECe0c | https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1523.%20Count%20Odd%20Numbers%20in%20an%20Interval%20Range
 1696 | Jump Game VI | https://leetcode.com/problems/jump-game-vi/ | https://youtu.be/LiEcBMK5PQs | https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1696.%20Jump%20Game%20VI
 1834 | Single-Threaded CPU | https://leetcode.com/problems/single-threaded-cpu/ | https://youtu.be/6104EJTG_T4 | https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1834.%20Single-Threaded%20CPU
 1871 | Jump Game VII | https://leetcode.com/problems/jump-game-vii/ | https://youtu.be/bZxWLuiqHes | https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1871.%20Jump%20Game%20VII