- New road queries (CSES)
- Kazaee - 1746F (Codeforces)
- Li Hua and Array - 1797E (Codeforces)
- Babysitting - 1903F (Codeforces)
- Alice's Adventures in the Rabbit Hole - 2028E (Codeforces)
- Bojanje (COCI)
- fpb (training)
- preoii_statue (training)
- ois_constarr (training)
- ois_fossils (training)
- itoi_icecream (training)