Andrei Raigorodskii, Doctor of Physical and Mathematical Sciences, Honoured Scientist of the Russian Federation, Director of the Phystech School of Applied Mathematics and Informatics, Chief Researcher—Head of the Laboratory of Advanced Combinatorics and Network Applications, Head of the MIPT-Sberbank Laboratory of Applied Research, Head of the Department of Discrete Mathematics at the Faculty of Computer Science and Applied Mathematics, Head of Joint Research Programs between Yandex and MIPT