added the problems

[anilkumarm0921-oss]

No description provided.

[super30admin]

Strengths:

• The student has correctly implemented both backtracking problems.
• The time and space complexity analyses are accurate.
• The code is clean, readable, and follows good practices.

Areas for Improvement:

• For Problem1, the student could add more comments to explain the backtracking logic, especially the "choose" and "not choose" parts.
• For Problem2, the student could add comments to explain the evaluation logic (e.g., how eval and prev are updated for multiplication).
• The student could consider using more descriptive variable names for s in Problem1 (e.g., candidatesLength).