[CS Academy] Awesome Software|PSCS Academy|Problem Solving-Math

Awesome Software

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[AtCoder] B - Even Degrees|PSAtCoder|Problem Solving-Graph Theory-DFS

B - Even Degrees

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[AtCoder] C - GP 2|PSAtCoder|Problem Solving-Combinatorics

C - GP 2

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[AtCoder] F - Strings of Eternity|PSAtCoder|Problem Solving-Z Function Algorithm

F - Strings of Eternity

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[AtCoder] F - Enclosed Points|PSAtCoder|Fenwick Tree-Problem Solving-Combinatorics

F - Enclosed Points

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[AtCoder] B - RGB Balls|PSAtCoder|Problem Solving-Math-Combinatorics

B - RGB Balls

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[Codeforces] Round 224 (Div. 2) C. Arithmetic Progression|PSCodeforces|Problem Solving-Math-Greedy

Codeforces Round 224 (Div. 2) C. Arithmetic Progression

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[Codeforces] Round 226 (Div. 2) C. Bear and Prime Numbers|PSCodeforces|Problem Solving-Math-Binary Search-Prefix Sum-Numeric Theory

Codeforces Round 226 (Div. 2) C. Bear and Prime Numbers

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[Codeforces] Round 227 (Div. 2) C. George and Number|PSCodeforces|Problem Solving-Greedy

Codeforces Round 227 (Div. 2) C. George and Number

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[Codeforces] Round 238 (Div. 2) D. Toy Sum|PSCodeforces|Problem Solving-Binary Search-Greedy

Codeforces Round 238 (Div. 2) D. Toy Sum

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