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Level 6A

To advance to the next level, you need to solve all problems (except the contests marked with asterisk).

Problems of medium difficulty on DP

*Additional tasks for DP

These are the tasks for the DP from the winter training camps of the algoprog 2021. The section is optional. The difficulty of the tasks is very different.

Hashes

There is no basic theory here yet, look on the Internet.
Additional theory (assuming that you have already read the basic theory): how to write hashes without multiplication.
More useful information about anti-hashtests.

Heap

See the video recordings of lectures of SIS.2013.B', section "Heap"
See video recordings of lectures of SIS.2008.B', section "Heap"