Problems were prepared by me, Ivan isaf27 Safonov, Denis altruist Anishchenko and Ildar 300iq Gaynullin. Thanks to Um_nik for testing and MikeMirzayanov for the great Codeforces and Polygon platforms.
You will be given five problems in each division and two hours to solve them.
UPD: Score distribution: Div1:500-1000-2000-3000-3500, Div2:500-1000-1500-2000-3000
UPD: Congratulations to the winners!