[AtCoder] B - Boxes|PSAtCoder|Problem Solving-Math-Numeric Theory

B - Boxes

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[AtCoder] D - Mixing Experiment|PSAtCoder|Problem Solving-2D Knapsack

D - Mixing Experiment

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[AtCoder] E - Frequency|PSAtCoder|Sorting-Problem Solving-Greedy

E - Frequency

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[Codeforces] Round #800 (Div. 1) B. Fake Plastic Trees|PSCodeforces|Problem Solving-Greedy

Codeforces Round #800 (Div. 1) B. Fake Plastic Trees

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[Codeforces] Round #801 (Div. 2) and EPIC Institute of Technology Round C. Zero Path|PSCodeforces|Problem Solving-Dynamic Programming-Knapsack

Codeforces Round #801 (Div. 2) and EPIC Institute of Technology Round C. Zero Path

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[Codeforces] Round #804 (Div. 2) C. The Third Problem|PSCodeforces|Problem Solving-Combinatorics

Codeforces Round #804 (Div. 2) C. The Third Problem

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[Codeforces] Round #802 (Div. 2) C. Helping the Nature|PSCodeforces|Problem Solving-Math-Greedy

Codeforces Round #802 (Div. 2) C. Helping the Nature

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[Codeforces] Round #805 (Div. 3) F. Equate Multisets|PSCodeforces|Problem Solving-Greedy-Trie

Codeforces Round #805 (Div. 3) F. Equate Multisets

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[CodeChef] Summing Slopes|PSCodeChef|Problem Solving-Math

Summing Slopes

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[CodeChef] Chef and Strange Matrix|PSCodeChef|Sorting-Problem Solving-Simulation

Chef and Strange Matrix

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