[Hacker Earth] Nim game|PSHacker Earth|Problem Solving-Dynamic Programming

Nim game

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[Hacker Earth] Missing String|PSHacker Earth|Sorting-Problem Solving-Hash Table-Math

Missing String

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[Codeforces] Round 450 (Div. 2) D. Unusual Sequences|PSCodeforces|Problem Solving-Math-Sieve of Eratosthenes

Codeforces Round 450 (Div. 2) D. Unusual Sequences

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[Codeforces] Educational Round 35 (Rated for Div. 2) E. Stack Sorting|PSCodeforces|Problem Solving-Greedy-Monotonic Stack

Educational Codeforces Round 35 (Rated for Div. 2) E. Stack Sorting

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[Codeforces] Round 457 (Div. 2) B. Jamie and Binary Sequence (changed after round)|PSCodeforces|Problem Solving-Math

Codeforces Round 457 (Div. 2) B. Jamie and Binary Sequence (changed after round)

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[Codeforces] Educational Round 37 (Rated for Div. 2) F. SUM and REPLACE|PSCodeforces|Fenwick Tree-Problem Solving-Math

Educational Codeforces Round 37 (Rated for Div. 2) F. SUM and REPLACE

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[Codeforces] VK Cup 2018 - Wild-card Round 1 F. Mobile Communications|PSCodeforces|Problem Solving-Math

VK Cup 2018 - Wild-card Round 1 F. Mobile Communications

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[Hacker Earth] Superior Substring|PSHacker Earth|Problem Solving-Dynamic Programming-Math

Superior Substring

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[Hacker Earth] Smart City|PSHacker Earth|Fenwick Tree-Lowest Common Ancestor-Problem Solving-Graph Theory-DFS

Smart City

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[Hacker Earth] Optimal Connectivity|PSHacker Earth|Lowest Common Ancestor-Problem Solving-Graph Theory-Dynamic Programming-DFS-Skip List

Optimal Connectivity

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