[CodeChef] XOR Product|PSCodeChef|Problem Solving-Math

XOR Product

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[CodeChef] Gravel|PSCodeChef|Fenwick Tree-Problem Solving

Gravel

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[AtCoder] F - Transportation|PSAtCoder|Problem Solving-Union Find

F - Transportation

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[AtCoder] F - Numbered Checker|PSAtCoder|Problem Solving-Math

F - Numbered Checker

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[AtCoder] F - XOR on Grid Path|PSAtCoder|Problem Solving-DFS-Meet In The Middle

F - XOR on Grid Path

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[AtCoder] E - Chinese Restaurant (Three-Star Version)|PSAtCoder|Problem Solving-Math-Two Pointer-Prefix Sum

E - Chinese Restaurant (Three-Star Version)

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[AtCoder] F - Best Concatenation|PSAtCoder|Sorting-Problem Solving-Math

F - Best Concatenation

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[Codeforces] Round #376 (Div. 2) C. Socks|PSCodeforces|Problem Solving-Union Find

Codeforces Round #376 (Div. 2) C. Socks

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[Codeforces] Round #378 (Div. 2) D. Kostya the Sculptor|PSCodeforces|Problem Solving-Hash Table-Greedy

Codeforces Round #378 (Div. 2) D. Kostya the Sculptor

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[Codeforces] Round #379 (Div. 2) C. Anton and Making Potions|PSCodeforces|Problem Solving-Math-Binary Search

Codeforces Round #379 (Div. 2) C. Anton and Making Potions

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