feat: problem 1 added

[Tejas274]

No description provided.

[super30admin]

The student has not provided any solution to the problem. Without seeing any code or approach, it's impossible to evaluate correctness, time complexity, space complexity, code quality, or efficiency.

To provide meaningful feedback, the student should:

1. First attempt to solve the problem and submit their code
2. Include comments explaining their approach
3. Consider edge cases and potential optimizations

For SQL problems specifically, they should:

1. Clearly state the database schema they're working with
2. Show the complete query with proper formatting
3. Explain any complex joins or subqueries used