Zehan Lin, Xiaowei Wu 0001, Shengwei Zhou 0002. Allocating Chores with Restricted Additive Costs: Achieving EFX, MMS, and Efficiency Simultaneously. In Hakim Hacid, Yoelle Maarek, Francesco Bonchi, Ido Guy, Emine Yilmaz, editors, Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026. pages 146-156, ACM, 2026. [doi]