1900:
1.Beautiful Array .
2.Vanya and Scales .
3.Train Hard, Win Easy .
4.Classy Numbers .
5.Dima and Salad .
6.Generating Sets .
7.Stars Drawing (Hard Edition) .
8.Chladni Figure.
9.Spy Syndrome 2 .
10.Subsequences (hard version) .

2000:
1.Relay Race .
2.PLEASE .
3.Coprime Subsequences .
4.Work Group .
5.Microtransactions (hard version) .
6.Giving Awards .
7.Weak Memory.
8.Inna and Sequence .
9.Building Forest .
10.Present to Mom .

2100:
1.Connected Components? .
2.Water Tree .
3.Blood Cousins .
4.Shovels Shop .
5.Random Task .
6.Perfect Groups .
7.Compress String .
8.Duff in Beach .
9.Destroy it! .
10.Valera and Swaps .

2200:
1.Divisors .
2.Tree Folding.
3.Network Safety .
4.Nikita and stack .
5.Treeland Tour .
6.Lovely Matrix .
7.Huge Strings .
8.Brain Network (hard) .
9.Running Over The Bridges .
10.The Minimum Number of Variables .