[AtCoder] A - Right Side Character|PSAtCoder|Problem Solving-Greedy

A - Right Side Character

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[AtCoder] E - Isolation|PSAtCoder|Problem Solving-Graph Theory

E - Isolation

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[Codeforces] Round 891 (Div. 3) F. Sum and Product|PSCodeforces|Problem Solving-Math

Codeforces Round 891 (Div. 3) F. Sum and Product

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[Codeforces] Round 890 (Div. 2) supported by Constructor Institute E1. PermuTree (easy version)|PSCodeforces|Problem Solving-0/1 Knapsack-DFS

Codeforces Round 890 (Div. 2) supported by Constructor Institute E1. PermuTree (easy version)

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[Codeforces] Round 890 (Div. 2) supported by Constructor Institute C. To Become Max|PSCodeforces|Problem Solving-Math-Binary Search-Prefix Sum

Codeforces Round 890 (Div. 2) supported by Constructor Institute C. To Become Max

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[Codeforces] Round 887 (Div. 1) B. Imbalanced Arrays|PSCodeforces|Sorting-Problem Solving-Two Pointer-Greedy

Codeforces Round 887 (Div. 1) B. Imbalanced Arrays

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[Codeforces] Round 887 (Div. 1) A. Ntarsis` Set|PSCodeforces|Problem Solving-Binary Search

Codeforces Round 887 (Div. 1) A. Ntarsis’ Set

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[Hacker Earth] Ratio|PSHacker Earth|Problem Solving-Math

Ratio

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[Hacker Earth] Class representatives|PSHacker Earth|Sorting-Fenwick Tree-Problem Solving-Dynamic Programming

Class representatives

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[Hacker Earth] Counting the number of intervals|PSHacker Earth|Fenwick Tree-Problem Solving

Counting the number of intervals

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