[AtCoder] D - Grid game|PSAtCoder|Sorting-Problem Solving

D - Grid game

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[AtCoder] C - Lexicographic constraints|PSAtCoder|Problem Solving-Binary Search-Monotonic Stack

C - Lexicographic constraints

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[AtCoder] E - Negative Doubling|PSAtCoder|Problem Solving-Math-Monotonic Stack-Prefix Sum

E - Negative Doubling

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[Codeforces] Round 133 (Div. 2) B. Forming Teams|PSCodeforces|Problem Solving-Greedy-Bipartite Graph Algorithm

Codeforces Round 133 (Div. 2) B. Forming Teams

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[Codeforces] Round 133 (Div. 2) D. Spider`s Web|PSCodeforces|Problem Solving-Binary Search

Codeforces Round 133 (Div. 2) D. Spider’s Web

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[Codeforces] Round 135 (Div. 2) D. Choosing Capital for Treeland|PSCodeforces|Problem Solving-Dynamic Programming-DFS

Codeforces Round 135 (Div. 2) D. Choosing Capital for Treeland

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[Codeforces] Round 138 (Div. 1) A. Bracket Sequence|PSCodeforces|Problem Solving-Monotonic Stack

Codeforces Round 138 (Div. 1) A. Bracket Sequence

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[Codeforces] Round 139 (Div. 2) C. Barcode|PSCodeforces|Problem Solving-Dynamic Programming

Codeforces Round 139 (Div. 2) C. Barcode

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[Codeforces] Round 142 (Div. 1) B. Planets|PSCodeforces|Problem Solving-Binary Search-Dijkstra

Codeforces Round 142 (Div. 1) B. Planets

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[Codeforces] CROC-MBTU 2012, Elimination Round (ACM-ICPC) C. Game with Coins|PSCodeforces|Problem Solving-Greedy

CROC-MBTU 2012, Elimination Round (ACM-ICPC) C. Game with Coins

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