An open week

The 37th International Olympiad in Informatics took place this week in Sucre, Bolivia (problems, results, top 5 on the left). It was a bit more tricky than usual to get to, but I'm sure the contestants, the leaders and the organizers also gathered quite a few good memories for a lifetime :) Congratulations to Hengxi Liu on a quite convincing win!

I continue to be amazed about many things IOI:

• the repeat participants who keep pushing me down the hall of fame even further, this year Ryan Bai and István Ádám Molnár. 
• the repeat problemsetters that keep coming up with amazing problems, setting three out of six problems just like two years ago: square1001 and E869120.
• the amazing openness of the organizers who publish both the GA minutes (2024, all, this year's minutes will probably appear a bit later?) and the IC minutes (March 2025, all). I am learning a lot about organizing those great events, and about democratic processes in general, from reading those.

Keep up the good work!

Codeforces hosted its Round 1040 between the IOI competition days (problems, results, top 5 on the left, analysis). Kevin114514, who as I understand was too young to qualify for China's IOI team (please correct me if I'm wrong!), instead had to settle with AKing this round and overtaking jiangly for the second place in the overall rating. Well done!

Thanks for reading, and check back next week.