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)
12821 AtCoder JOI2009YO: E. シャッフル
12820 AtCoder JOI2009YO: D. 薄氷渡り
12819 AtCoder JOI2009YO: C. 連鎖
12818 AtCoder JOI2009YO: B. コンテスト
12817 AtCoder JOI2009YO: A. タイムカード
12816 AtCoder JOI2009HO: E. 認証レベル
12815 AtCoder JOI2009HO: D. 散歩
12814 AtCoder JOI2009HO: C. あみだくじ
12813 AtCoder JOI2009HO: B. ピザ
12812 AtCoder JOI2009HO: A. IOIOI
12811 AtCoder JOI2008YO: F. 船旅
12810 AtCoder JOI2008YO: E. おせんべい
12809 AtCoder JOI2008YO: D. 星座探し
12808 AtCoder JOI2008YO: C. カードゲーム
12807 AtCoder JOI2008YO: B. JOIとIOI
12806 AtCoder JOI2008YO: A. おつり
12805 AtCoder JOI2008HO: E. ペンキの色
12804 AtCoder JOI2008HO: D. ぴょんぴょん川渡り
12803 AtCoder JOI2008HO: C. ダーツ
12802 AtCoder JOI2008HO: B. 共通部分文字列
12801 AtCoder JOI2008HO: A. 碁石ならべ
12800 AtCoder JOI2007YO: F. 通学経路
12799 AtCoder JOI2007YO: E. 品質検査
12798 AtCoder JOI2007YO: D. カードの並び替え
12797 AtCoder JOI2007YO: C. シーザー暗号
12796 AtCoder JOI2007YO: B. 未提出者は誰だ
12795 AtCoder JOI2007YO: A. 得点
12794 AtCoder JOI2007HO: E. 最軽量のモビール
12793 AtCoder JOI2007HO: D. 最悪の記者
12792 AtCoder JOI2007HO: C. 最古の遺跡
12791 AtCoder JOI2007HO: B. 最長の階段
12790 AtCoder JOI2007HO: A. 最大の和
12789 AtCoder JOI2006YO: E. JOI 2006 予選 問題5
12788 AtCoder JOI2006YO: D. JOI 2006 予選 問題4
12787 AtCoder JOI2006YO: C. JOI 2006 予選 問題3
12786 AtCoder JOI2006YO: B. JOI 2006 予選 問題2
12785 AtCoder JOI2006YO: A. JOI 2006 予選 問題1
12784 AtCoder JOI2006HO: E. JOI 2006 本選 問題5
12783 AtCoder JOI2006HO: D. JOI 2006 本選 問題4
12782 AtCoder JOI2006HO: C. JOI 2006 本選 問題3
12781 AtCoder JOI2006HO: B. JOI 2006 本選 問題2
12780 AtCoder JOI2006HO: A. JOI 2006 本選 問題1
12779 AtCoder JAG2018SUMMER-DAY2: K. Short LIS
12778 AtCoder JAG2018SUMMER-DAY2: J. AB Sort
12777 AtCoder JAG2018SUMMER-DAY2: I. ADD DIV MAX RESTORE
12776 AtCoder JAG2018SUMMER-DAY2: H. Prefix Suffix Free
12775 AtCoder JAG2018SUMMER-DAY2: G. Construct One Point
12774 AtCoder JAG2018SUMMER-DAY2: F. Point Sequences
12773 AtCoder JAG2018SUMMER-DAY2: E. Self-contained
12772 AtCoder JAG2018SUMMER-DAY2: D. Knapsack And Queries
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