A counterexample shows Garg and Murhekar's 2021 algorithm for EFX allocations may not terminate, and a new poly-time algorithm computes WEFX and fPO allocations for additive bivalued valuations.
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Revisiting Fair and Efficient Allocations for Bivalued Goods
A counterexample shows Garg and Murhekar's 2021 algorithm for EFX allocations may not terminate, and a new poly-time algorithm computes WEFX and fPO allocations for additive bivalued valuations.