📣 Today, at 15:35 UTC Codeforces hosts a regular Round 562. It has slightly different rules and harder problems but you can also use Kotlin to get some fun and additional practice. http://codeforces.com/contests/1168,1169

@elizarov Is Kotlin 1.3 available there too? About 8 months ago only 1.1 was available in regular rounds.

Yes. Codeforces is on Kotlin 1.3 for quite a while (don’t remember how long ago).