feat: add solutions to lc problems: No.3573,3574

[yanglbme]

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[Copilot]

Pull request overview

This PR adds complete solutions for two LeetCode problems from Biweekly Contest 158: Problem 3573 (Best Time to Buy and Sell Stock V) and Problem 3574 (Maximize Subarray GCD Score).

Key Changes:

• Added dynamic programming solution for stock trading problem with both normal and short-selling transactions
• Implemented efficient enumeration algorithm for maximizing GCD score with element doubling operations
• Provided solutions in 7 languages (Python, Java, C++, Go, C#, Rust, TypeScript) for problem 3573 and 6 languages for problem 3574

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/README.md	Chinese problem description, constraints, and solution explanation with DP approach
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/README_EN.md	English problem description, constraints, and solution explanation
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/Solution.py	Python implementation using 3D DP array with O(n*k) time complexity
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/Solution.java	Java implementation with long data type for handling large profits
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/Solution.cpp	C++ implementation using memset and max with initializer list
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/Solution.go	Go implementation returning int64 result
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/Solution.cs	C# implementation with multi-dimensional array syntax
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/Solution.rs	Rust implementation with explicit type conversions
solution/3500-3599/3573.Best Time to Buy and Sell Stock V/Solution.ts	TypeScript implementation with proper type annotations
solution/3500-3599/3574.Maximize Subarray GCD Score/README.md	Chinese problem description with GCD score maximization details
solution/3500-3599/3574.Maximize Subarray GCD Score/README_EN.md	English problem description and mathematical approach explanation
solution/3500-3599/3574.Maximize Subarray GCD Score/Solution.py	Python implementation enumerating subarrays and tracking factor-of-2 counts
solution/3500-3599/3574.Maximize Subarray GCD Score/Solution.java	Java implementation with helper gcd method
solution/3500-3599/3574.Maximize Subarray GCD Score/Solution.cpp	C++ implementation using standard gcd function
solution/3500-3599/3574.Maximize Subarray GCD Score/Solution.go	Go implementation with custom gcd function
solution/3500-3599/3574.Maximize Subarray GCD Score/Solution.rs	Rust implementation with recursive gcd helper
solution/3500-3599/3574.Maximize Subarray GCD Score/Solution.ts	TypeScript implementation with iterative gcd function

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