Topcoder Open 2021 Algorithm Semifinal 2 is right around the corner, starting in less than 5 minutes!
The competitors are Benq aka bqi343, Petr, scott_wu, neal aka neal_wu, SpyCheese, maroonrk aka maroon_kuri, krijgertje, and Sugar_fan.
The top 4 advance to the Finals. The advancers from Semi 1 are ecnerwala, tourist, Um_nik, and ACRush.
Watch the live broadcast on YouTube and Twitch, featuring Pena, Egor, tourist, and ksun48!
When I opened Hard, I was sure that I saw this problem (=analysis of games with cycles) before, but I couldn't find a correct keyword to Google, and spent 30 or 40 mins staring at irrelevant articles (and lost a ticket to the Finals). And now I suddenly remembered it's 1442F - Differentiating Games. All hail Codeforces...
Congratulations to advancers btw.
As author of problem above, I was very disappointed by distribution of semifinals