TL;DR: Come solve 3 spooky problems a day in [October 2025 Long Challenge](https://www.eldarverse.com/contest/halloween25) from [October 27](https://www.timeanddate.com/worldclock/converter.html?iso=20251027T040000&p1=224&p2=179&p3=16&p4=37&p5=166&p6=371&p7=176&p8=33&p9=236&p10=248&p11=152) through November 3, UTC 4am time.↵
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I'm hosting a Halloween-themed contest on EldarVerse! Each day will feature three problems of increasing difficulty — from something like Codeforces Div2 A to something like Div2 E.↵
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I want to thank [user:asdasdqwer,2025-10-20], [user:StupidGuy13,2025-10-20], [user:fextivity,2025-10-20], and [user:likithreddy949,2025-10-20] for their help testing the problemset.↵
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Special thanks to [user:Golovanov399,2025-10-26] for additional testing on a short notice <3↵
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Hope to see you on the leaderboard!↵
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P.S. Contest format is a mix of Meta Hacker Cup (download inputs, submit outputs) and Advent of Code (each problem is worth 100 points, each subsequent solver gets 1 less point).↵
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I'm hosting a Halloween-themed contest on EldarVerse! Each day will feature three problems of increasing difficulty — from something like Codeforces Div2 A to something like Div2 E.↵
↵
I want to thank [user:asdasdqwer,2025-10-20], [user:StupidGuy13,2025-10-20], [user:fextivity,2025-10-20], and [user:likithreddy949,2025-10-20] for their help testing the problemset.↵
↵
Special thanks to [user:Golovanov399,2025-10-26] for additional testing on a short notice <3↵
↵
Hope to see you on the leaderboard!↵
↵
P.S. Contest format is a mix of Meta Hacker Cup (download inputs, submit outputs) and Advent of Code (each problem is worth 100 points, each subsequent solver gets 1 less point).↵
↵
