[Codeforces] Round #FF (Div. 1) B. DZY Loves Modification|PSCodeforces|Problem Solving-Math

Codeforces Round #FF (Div. 1) B. DZY Loves Modification

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[Codeforces] Round 911 (Div. 2) D. Small GCD|PSCodeforces|Problem Solving-Dynamic Programming-Math

Codeforces Round 911 (Div. 2) D. Small GCD

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[AtCoder] E - Joint Two Strings|PSAtCoder|Problem Solving-Two Pointer

E - Joint Two Strings

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[AtCoder] A - Replace C or Swap AB|PSAtCoder|Problem Solving-Two Pointer

A - Replace C or Swap AB

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[AtCoder] B - Make Multiples|PSAtCoder|Problem Solving-Dynamic Programming-Euclidean Algorithm-Bit Manipulation

B - Make Multiples

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[AtCoder] E - Our clients, please wait a moment|PSAtCoder|Problem Solving-Dijkstra

E - Our clients, please wait a moment

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[AtCoder] D - Square Permutation|PSAtCoder|Problem Solving-Math

D - Square Permutation

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[Hacker Earth] Harmonic Triplets|PSHacker Earth|Problem Solving-Dynamic Programming-Binary Search

Harmonic Triplets

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[Hacker Earth] Mathison and the divisible trios|PSHacker Earth|Problem Solving-Hash Table-Combinatorics

Mathison and the divisible trios

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[Codeforces] Prefix Number <Liv.ai>|PSCodeforces|Problem Solving-Dynamic Programming

Prefix Number

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