DP-3 complete

[KartavyaBhatt]

No description provided.

[super30admin]

Minimum Falling Path Sum (Problem1.py)

• Strengths: The solution shows good understanding of dynamic programming with the choose/notChoose pattern, proper handling of edge cases, and clean variable naming.
• Critical Issue: The solution solves "Delete and Earn" (LeetCode 740) instead of "Minimum Falling Path Sum" (LeetCode 931). These are fundamentally different problems requiring different approaches.
• For Minimum Falling Path Sum: The correct approach would use DP where each cell depends on three cells below it (directly below, bottom-left, bottom-right), not a house robber-style approach.
• Recommendation: Please re-read the problem statement carefully and implement the falling path sum algorithm using bottom-up DP or memoization where each position considers paths from the row below.

VERDICT: NEEDS_IMPROVEMENT

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Delete and Earn (Problem2.py)

The student appears to have submitted code for a different LeetCode problem entirely. This suggests either:

• Confusion about which problem to solve
• Copy-paste error from another solution
• Misunderstanding of the problem requirements

The submitted code is actually a solid solution for "Minimum Falling Path Sum" with proper edge case handling and in-place modification for space efficiency. However, it does not solve "Delete and Earn."

For the actual "Delete and Earn" problem, the student should:

1. First understand that the problem is about selecting numbers and avoiding their adjacent values
2. Use a frequency array to sum all occurrences of each value
3. Apply the House Robber DP pattern: dp[i] = max(dp[i-1], arr[i] + dp[i-2])

VERDICT: NEEDS_IMPROVEMENT