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)
14071 AtCoder QUPC2014: B. 元素の系統名
14070 AtCoder QUPC2014: A. 成績判定
14069 AtCoder ABS: PracticeA. Welcome to AtCoder
14068 AtCoder PRACTICE2: L. Lazy Segment Tree
14067 AtCoder PRACTICE2: K. Range Affine Range Sum
14066 AtCoder PRACTICE2: J. Segment Tree
14065 AtCoder PRACTICE2: I. Number of Substrings
14064 AtCoder PRACTICE2: H. Two SAT
14063 AtCoder PRACTICE2: G. SCC
14062 AtCoder PRACTICE2: F. Convolution
14061 AtCoder PRACTICE2: E. MinCostFlow
14060 AtCoder PRACTICE2: D. Maxflow
14059 AtCoder PRACTICE2: C. Floor Sum
14058 AtCoder PRACTICE2: B. Fenwick Tree
14057 AtCoder PRACTICE2: A. Disjoint Set Union
14056 AtCoder PAST202303-OPEN: O. 区間ソートクエリ
14055 AtCoder PAST202303-OPEN: N. ゴミ出し
14054 AtCoder PAST202303-OPEN: M. お片付け
14053 AtCoder PAST202303-OPEN: L. 順位表
14052 AtCoder PAST202303-OPEN: K. 金貨と袋のゲーム
14051 AtCoder PAST202303-OPEN: J. 図形のシフト
14050 AtCoder PAST202303-OPEN: I. 簡易オマハポーカー
14049 AtCoder PAST202303-OPEN: H. 3 枚階段
14048 AtCoder PAST202303-OPEN: G. 隣り合うマス
14047 AtCoder PAST202303-OPEN: F. 集合の問題
14046 AtCoder PAST202303-OPEN: E. 図形のシャッフル
14045 AtCoder PAST202303-OPEN: D. シューティング
14044 AtCoder PAST202303-OPEN: C. 逆順列
14043 AtCoder PAST202303-OPEN: B. 小数点第 D 位
14042 AtCoder PAST202303-OPEN: A. シンプル石取りゲーム
14041 AtCoder PAST202212-OPEN: O. Shift and Shift
14040 AtCoder PAST202212-OPEN: N. Sequence and Function
14039 AtCoder PAST202212-OPEN: M. Tree and Intervals
14038 AtCoder PAST202212-OPEN: L. Segments
14037 AtCoder PAST202212-OPEN: K. Buy an Integer
14036 AtCoder PAST202212-OPEN: J. Crossing
14035 AtCoder PAST202212-OPEN: I. Order of Height
14034 AtCoder PAST202212-OPEN: H. Digit Diff Sum
14033 AtCoder PAST202212-OPEN: G. Range Sum
14032 AtCoder PAST202212-OPEN: F. Average Ranking
14031 AtCoder PAST202212-OPEN: E. Parentheses
14030 AtCoder PAST202212-OPEN: D. Bozu Mekuri
14029 AtCoder PAST202212-OPEN: C. Triplet Product
14028 AtCoder PAST202212-OPEN: B. Fractional Comparison
14027 AtCoder PAST202212-OPEN: A. Tokens
14026 AtCoder PAST202209-OPEN: O. Pick Two Numbers
14025 AtCoder PAST202209-OPEN: N. From Above and From the Side
14024 AtCoder PAST202209-OPEN: M. series
14023 AtCoder PAST202209-OPEN: L. Exhibition
14022 AtCoder PAST202209-OPEN: K. Checking Connectivity
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