feat: add solutions to lc problem: No.3562

[yanglbme]

No description provided.

[Copilot]

Pull request overview

This PR adds solutions to LeetCode problem 3562 "Maximum Profit from Trading Stocks with Discounts" from Weekly Contest 451. The problem involves maximizing stock trading profits in a company hierarchy where employees can get discounts if their direct boss purchases stock.

Key changes:

• Implements tree-based dynamic programming solutions across five programming languages
• Adds comprehensive problem documentation in both Chinese and English
• Includes visual examples and constraints for the problem

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Solution.py	Python implementation using DFS with 2D DP state tracking budget and parent purchase status
Solution.java	Java implementation with class-level state management for graph and arrays
Solution.cpp	C++ implementation using lambda with recursive capture for DFS
Solution.go	Go implementation with closures for DFS traversal
Solution.ts	TypeScript implementation with proper Math.floor for integer division
README.md	Chinese problem description with examples, constraints, and inline solution code
README_EN.md	English problem description with examples, constraints, and inline solution code
CONTEST_README.md	Updated contest index to include reference to problem 3562
CONTEST_README_EN.md	Updated English contest index to include reference to problem 3562
README.md (solution/)	Updated main problem index with problem 3562 metadata
README_EN.md (solution/)	Updated English main problem index with problem 3562 metadata

The solutions correctly implement a tree DP algorithm where each node maintains state for different budget levels and parent purchase decisions. All language implementations are consistent and handle the discount policy correctly (half price when parent buys). No issues were identified in the code logic, naming conventions, or documentation.

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