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> zei20241012 · 335 of 335 solved problems · arena profile

• 80059A · Wordtoday
• 900318A · Even Oddstoday
• 8004A · Watermelontoday
• ?2271B · MEX Game7d ago
• ?2271A · Robot Odd Moves7d ago
• 17001916D · Mathematical Problem9d ago
• 16001857F · Sum and Product12d ago
• 15002067C · Devyatkino15d ago
• 16002196B · Another Problem about Beautiful Pairs15d ago
• 12002269C · K Is Important15d ago
• 10002269B · KiaKio and Squared Numbers17d ago
• 8002269A · SauSaGe Bank20d ago
• 16002232C2 · Seating Arrangement (Hard Version)20d ago
• 17002267F1 · XOR Transformations (Easy Version)22d ago
• 14002267D · Backrooms Hill22d ago
• 12002267C · GCD Treasury22d ago
• 8002267B · Fashionable Array22d ago
• 8002267A · Turn Into a Palindrome22d ago
• 14002171C2 · Renako Amaori and XOR Game (hard version)24d ago
• 1500845C · Two TVs43d ago
• 15001891C · Smilo and Monsters47d ago
• 190016E · Fish54d ago
• 10001695B · Circle Game56d ago
• 150017B · HierarchyAug 2026
• 170029C · Mail StampsAug 2026
• 12002256C · Hot Potatoes at the Fairy WarehouseAug 2026
• 10002256B · Domino TilesAug 2026
• 8002256A · Three Numbers on the BlackboardAug 2026
• 9002148C · PacerAug 2026
• 13002044E · Insane ProblemAug 2026
• 12002210C1 · A Simple GCD Problem (Easy Version)Aug 2026
• 14002245C · MEXORAug 2026
• 14002252C · Risky TowerAug 2026
• 8002252A · Boss FightAug 2026
• 10001257B · Magic StickAug 2026
• 900892A · GreedAug 2026
• 9001584C · Two ArraysAug 2026
• 8001920A · Satisfying ConstraintsAug 2026
• 13002248C · Maximize the ScoreAug 2026
• 10002248B · Merge to MatchAug 2026
• 8002248A · You Delete, I DeleteAug 2026
• 14002126E · G-C-D, Unlucky!Jul 2026
• 14002238C · Village GuildsJul 2026
• 13002242C · Unstable ElementsJul 2026
• 11001899B · 250 Thousand Tons of TNTJul 2026
• 11002245B · Delete and ConcatenateJul 2026
• 8002245A · Who Watches the Watchpig?Jul 2026
• 1400977D · Divide by three, multiply by twoJul 2026
• 1200977C · Less or EqualJul 2026
• 900977B · Two-gramJul 2026