Исправление snizovtsev, 06.12.18 21:55 (текущая версия) :
https://stepik.org/https://www.edx.org/http://courses.csail.mit.edu/https://compsciclub.ru/courses/https://www.ops-class.org/
Исходная версия snizovtsev, 06.12.18 21:49:
https://stepik.org/https://www.edx.org/http://courses.csail.mit.edu/https://compsciclub.ru/courses/