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Python Dictionary Data Structures
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Python Dictionary Data Structures

EasyPython

Problem

How would you approach a Python dictionary data structures coding problem, and what would you check for correctness and edge cases?

Write a Python function that solves a dictionary-based problem using efficient key lookups. Your answer should focus on the algorithm, correctness, and edge cases. Return the required result for the given input shape defined by the function signature.

Constraints

  • 0 <= len(data) <= 10^5
  • Elements in data are hashable Python values
  • If multiple keys tie for the best score, return the smallest key
  • Return None for empty input

Function Signature

def solve_dict_problem(data):
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