1. H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332;
2. DAMO Academy, Alibaba Group (U.S.), Inc., Bellevue, Washington 98004;
3. Institute for Computational and Experimental Research in Mathematics, Brown University, Providence, Rhode Island 02903;
4. Sloan School of Management, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139