ВКонтакте с Телеграммом пользуешь?

ВКонтакте и Телеграмм писал брат Дурова Николай... Крутой олимпиадник. Три золота IMO, четыре участия в IOI (золото и три серебра), дважды чемпион мира ACM ICPC. Перед ним только Г.Короткевич.

Сейчас тренирует команду СПБГУ, которая несколько лет назад стала чемпионами мира ACM ICPC. Сам Павел Дуров гуманитарий.

N.Durov worked as a lead developer of the VKontakte.ru team until 2013.... he founded the instant messenger service Telegram and developed the MTProto protocol for Telegram in 2013.

In 1996, 1997 and 1998 Durov participated in the International Mathematical Olympiad, winning a gold medal in each of the three contests he took part in (where his contestant name was Nikolai Dourov.) In 1995, 1996, 1997, and 1998 he won one gold and three silver medals in the International Olympiad in Informatics. He was a member of Saint-Petersburg State University ACM team, which won the ACM International Collegiate Programming Contest in 2000 and 2001.

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IMO - International Mathematical Olympiad
IOI - International Olympiad in Informatics