Multithread input validation

[Matistjati]

Sweden has some problems where this part takes ~25 seconds.

[Tagl]

Same Iceland has had some where it is **well** over a minute. Would like this.

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On Wed, Apr 29, 2026, 18:17 Joshua Bergman Andersson < ***@***.***> wrote: *Matistjati* created an issue (Kattis/problemtools#417) <#417> Sweden has some problems where this part takes ~25 seconds. — Reply to this email directly, view it on GitHub <#417>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB2ZBKX2U346YQ4VOLXFTE34YJBMZAVCNFSM6AAAAACYLEJYRCVHI2DSMVQWIX3LMV43ASLTON2WKOZUGM2TENZSGQ4TGMY> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[gkreitz]

Sounds like an important feature if both of you want it. Should be much more feasible to do once #398 is done.

Adding a link to #208 too - not because they're super related, but more as a note-to-self to do that one too when fixing this.