Asymptotic complexity recap. Problems for training here and here.

An introduction to Upload system, not classified 0. programming task, its specification can be found here.
Write a program that solves the task. Upload it and check how the system assess it. Follow strictly the rules specified at Upload System.

Graphs and their representations. Problems for training here.

Spanning trees and minimum spanning trees of graphs. Problems for training here.

Binary heap, binomial heap, Fibonacci heap. Problems for training here.

Text searching I with no solutions here.
Text searching II with solutions here.
Huffman coding with solutions here.

We are preparing the rest.