Task: Fix Graph Coloring Solver - RuntimeError: Set Changed Size During Iteration
Task: Fix Graph Coloring Solver - RuntimeError: Set Changed Size During Iteration: a task in Terminal-Lego-15k (Harbor dataset). You need to fix a Python graph coloring solver that uses constraint propagation with recursive backtracking. The solver encounters a RuntimeError: Set changed size…
The task
You need to fix a Python graph coloring solver that uses constraint propagation with recursive backtracking. The solver encounters a `RuntimeError: Set changed size during iteration` because it modifies a set (`self.domains[var]`) while iterating over it in the `solve` method.
Part of PrimeIntellect/Terminal-Lego-15k.