The ITMO Segment Tree course (Part 1 → Step 1: Theory) does not open. This is the very first page of the course and blocks learners from starting.
Kindly fix the broken page or provide an alternative link. [user:MikeMirzayanov][user:pashka]
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Codeforces (c) Copyright 2010-2026 Mike Mirzayanov
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https://mirror.codeforces.com/blog/entry/18051 heya ya go u can read it from here for now :D source is source o_O but teaching might be diff :p
MikeMirzayanov pashka