Ciao, Codeforces! We're glad to invite you to take part in Codeforces Round 975 (Div. 1) and Codeforces Round 975 (Div. 2), which will start on Sep/27/2024 11:05 (Moscow time). You will be given 6 problems and 2 hours to solve them in both divisions.

Please note the unusual starting time.

This round is based on Italian Olympiad in Informatics (OII) 2024.

The problems were authored by lorenzoferrari, wksni and me.

We would like to thank

• KAN for his nutella coordination;
• bortoz, collodel, dp_1, franfill, franv, harniver, jamesbamber, Kaey, veluca93, Virv for helping with both this contest and the onsite contest preparation;
• Um_nik, EgorUlin, konsteros, Mihail_Podyachih, bugrova, Ludissey, Nonoze, Sofapuden, Temmie for testing;
• MikeMirzayanov for creating Codeforces and Polygon.

Score distribution:

• Div. 1: $$$500 - 750 - 1000 - 1500 - 2250 - 3250$$$
• Div. 2: $$$500 - 1000 - 1750 - 2000 - 2250 - 3000$$$

We hope you'll like the problemset!