[AtCoder] C - エックスオア多橋君|PSAtCoder|Problem Solving-DFS-Bit Manipulation

C - エックスオア多橋君

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[AtCoder] C - ビーム|PSAtCoder|Problem Solving-Binary Search

C - ビーム

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[AtCoder] D - suffix array|PSAtCoder|Problem Solving-Greedy

D - suffix array

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[Codeforces] Educational Round 135 (Rated for Div. 2) D. Letter Picking|PSCodeforces|Problem Solving-Greedy

Educational Codeforces Round 135 (Rated for Div. 2) D. Letter Picking

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[Codeforces] Round 820 (Div. 3) E. Guess the Cycle Size|PSCodeforces|Problem Solving-Math

Codeforces Round 820 (Div. 3) E. Guess the Cycle Size

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[Codeforces] Round 830 (Div. 2) C2. Sheikh (Hard Version)|PSCodeforces|Problem Solving-Binary Search-Greedy-Prefix Sum

Codeforces Round 830 (Div. 2) C2. Sheikh (Hard Version)

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[Codeforces] Round 830 (Div. 2) C1. Sheikh (Easy version)|PSCodeforces|Problem Solving-Binary Search-Greedy-Prefix Sum

Codeforces Round 830 (Div. 2) C1. Sheikh (Easy version)

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[Codeforces] Round 822 (Div. 2) D. Slime Escape|PSCodeforces|Problem Solving-Dynamic Programming-Greedy

Codeforces Round 822 (Div. 2) D. Slime Escape

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[Codeforces] Round 831 (Div. 1 + Div. 2) E. Hanging Hearts|PSCodeforces|Problem Solving-Dynamic Programming-DFS-Greedy

Codeforces Round 831 (Div. 1 + Div. 2) E. Hanging Hearts

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[CS Academy] Crossing Tree|PSCS Academy|Problem Solving-DFS

Crossing Tree

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