Starlight: List of Problems

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Over 20,000 problems available. AMC 8/10/12 and AIME problems from 2010-2023; USAJMO/USAMO problems from 2002-2023 available. USACO problems from 2014 to 2023 (all divisions). Codeforces, AtCoder, DMOJ problems are added daily around 04:00 AM UTC, which may cause disruptions.

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ID Problem Name (click to add insights/hints, view summary of insights/hints and similar problems)
14521 AtCoder TKPPC3: H. 新入生歓迎数列 - Hard
14520 AtCoder TKPPC3: G. パソコンの買い替え
14519 AtCoder TKPPC3: F. 天使とふすま
14518 AtCoder TKPPC3: E. デフレゲーム
14517 AtCoder TKPPC3: D. 巨大チェスボード
14516 AtCoder TKPPC3: C. 新入生歓迎数列 - Easy
14515 AtCoder TKPPC3: B. 鰻と忖度
14514 AtCoder TKPPC3: A. 時差
14513 AtCoder TKPPC2: J. 次のお仕事 (New Game)
14512 AtCoder TKPPC2: I. ボス(Boss)
14511 AtCoder TKPPC2: H. デバッグ(Debug)
14510 AtCoder TKPPC2: G. 貢物(Tribute)
14509 AtCoder TKPPC2: F. NPCの家 (NPC's House)
14508 AtCoder TKPPC2: E. 歩くNPCたち(Walking NPCs)
14507 AtCoder TKPPC2: D. エンブレム(Emblem)
14506 AtCoder TKPPC2: C. 有給休暇(Paid Vacation)
14505 AtCoder TKPPC2: B. 書き換え(Rewrite)
14504 AtCoder TKPPC2: A. 入社(Join the Company)
14503 AtCoder TKPPC: J. 仕事をしよう! (Working!)
14502 AtCoder TKPPC: I. 重要証拠 (Important evidence)
14501 AtCoder TKPPC: H. 私、木になります (I become a tree)
14500 AtCoder TKPPC: G. おおきなかずを作った (I made a huge number)
14499 AtCoder TKPPC: F. 吹奏楽部 (Brass Band)
14498 AtCoder TKPPC: E. 不可視境界線 (The Invisible Borderline)
14497 AtCoder TKPPC: D. サポーター (Supporter)
14496 AtCoder TKPPC: C. お姉ちゃんって呼んで (Call me sister)
14495 AtCoder TKPPC: B. 金髪の少女 (Blonde girls)
14494 AtCoder TKPPC: A. 足し算の宿題 (A + B Home work)
14493 AtCoder LANGUAGE-TEST-VER1: G. アルファベット探し
14492 AtCoder LANGUAGE-TEST-VER1: F. THE☆たこ焼き祭り2012
14491 AtCoder LANGUAGE-TEST-VER1: E. 平均値太郎の憂鬱
14490 AtCoder LANGUAGE-TEST-VER1: D. 超大型連休
14489 AtCoder LANGUAGE-TEST-VER1: C. おとぎの国の高橋君
14488 AtCoder LANGUAGE-TEST-VER1: B. 帰ってきた器物損壊!高橋君
14487 AtCoder LANGUAGE-TEST-VER1: A. センター採点
14486 AtCoder TESSOKU-BOOK: A26. Prime Check
14485 AtCoder TESSOKU-BOOK: A25. Number of Routes
14484 AtCoder TESSOKU-BOOK: A24. LIS
14483 AtCoder TESSOKU-BOOK: A23. All Free
14482 AtCoder TESSOKU-BOOK: A22. Sugoroku
14481 AtCoder TESSOKU-BOOK: A21. Block Game
14480 AtCoder TESSOKU-BOOK: A20. LCS
14479 AtCoder TESSOKU-BOOK: A19. Knapsack 1
14478 AtCoder TESSOKU-BOOK: A18. Subset Sum
14477 AtCoder TESSOKU-BOOK: A17. Dungeon 2
14476 AtCoder TESSOKU-BOOK: A16. Dungeon 1(※初版第 1 刷の B22 も同じ問題です)
14475 AtCoder TESSOKU-BOOK: A15. Compression
14474 AtCoder TESSOKU-BOOK: A14. Four Boxes
14473 AtCoder TESSOKU-BOOK: A13. Close Pairs
14472 AtCoder TESSOKU-BOOK: A12. Printer
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