Hello everyone,
I'm asking for some help about how to train my schoolmates for Regional OI. Most of them have a fairly good MO background, so they are supposed to get good even if they don't practice at home (i.e., I think the $$$2$$$ hours a week at school should be enough). However, the results so far are a bit disappointing: I feel I'm doing something really wrong.
Format of Regional OI
The statements are here (requires registration). Each year, there are usually
- $$$2$$$ easy problems (let's say A, B);
- $$$1$$$ standard DP with a twist (C);
- $$$1$$$ standard graph problem with a twist (D).
A < B < C < D (in order of difficulty and points). They are similar to Div. 3 C, D, E, F. Solving A and C is enough to go to National OI.
How it went this year
The training started in October 2021.
- October — November: introduction to C++ and STL (in the CPH, they correspond to chapters $$$1$$$, $$$2$$$, $$$3$$$, $$$4$$$, part of $$$5$$$, part of $$$6$$$)
- December — January: dynamic programming (chapter $$$7$$$)
- end of January: ad-hoc, number theory (chapter $$$21$$$)
- February — April: graphs (chapters $$$11$$$, $$$12$$$, part of $$$13$$$, part of $$$14$$$, part of $$$15$$$)
