It's our pleasure to announce the the finals of the 11th Bubble Cup! Bubble Cup is a progrmaming competition organized by Microsoft Development Center Serbia (MDCS). The contest will take place on Saturday, 22nd of September at 11:00 UTC in Belgradem, and will last for 5 hours. Live results will be available on the official Bubble Cup website. Results will be frozen during the last hour of the competition. The winners will be announced at the closing ceremony.
The format of the competition is very similar to ACM-ICPC — teams consisting of up to three people are allowed, and they have one computer and five hours to solve 10+ problems, with no partial scoring. Ties are broken using the usual time penalty rules.
Just like in the previous years, there will be an online mirror of the finals here at Codeforces, starting on Saturday, 22nd of September at 12:35 UTC. Unlike the previous years, the mirror will partly overlap with the onsite finals.
This year, the onsite competition is divided in two "divisions", called Premier League and Rising Stars. The two contests will have most of their problems in common, but the Rising Stars competition will feature some easier tasks targeted at high school contestants. Both of the contests will be mirrored here on Codeforces, with Premier League mapping to the Div1 contest and Rising Stars mapping to the Div2 contest. The mirror will use native Codeforces ACM-ICPC team contest rules.
Both contests will be unrated, due to the format and the length of the mirror being dissimilar to the standard Codeforces rated rounds. Note that this is a team contest, i.e. competing in teams up to three people is allowed. (Of course, you can also compete in a 1-person team.) There will be at least 9 problems in each division.
The problems and their solutions were created by employees and interns of Microsoft: Milanin, ibra, Kole, radras, niksmiljkovic, davidmilicevic97, FilipVesovic, myself and many more. Most of the team works in MDCS.
We express gratitude to ... for round coordination, and MikeMirzayanov and the rest of the team for the great Codeforces and the wonderful Polygon platform. A very special thanks goes to our tester knightL, who made many valuable suggestions.