[AtCoder] B - Powers of two|PSAtCoder|Problem Solving-Hash Table-Math-Numeric Theory

B - Powers of two

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[AtCoder] A - Irreversible operation|PSAtCoder|Problem Solving-Greedy

A - Irreversible operation

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[AtCoder] D - Harlequin|PSAtCoder|Problem Solving-Numeric Theory-Game Theory

D - Harlequin

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[AtCoder] C - Product and GCD|PSAtCoder|Problem Solving-Sieve of Eratosthenes-Numeric Theory

C - Product and GCD

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[AtCoder] C - Exam and Wizard|PSAtCoder|Problem Solving-Heap-Greedy

C - Exam and Wizard

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[AtCoder] B - KEYENCE String|PSAtCoder|String-Problem Solving

B - KEYENCE String

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[Codeforces] Round #154 (Div. 2) B. Physics Practical|PSCodeforces|Problem Solving-Two Pointer-Sliding Window

Codeforces Round #154 (Div. 2) B. Physics Practical

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[Codeforces] Round #160 (Div. 1) A. Maxim and Discounts|PSCodeforces|Problem Solving-Greedy

Codeforces Round #160 (Div. 1) A. Maxim and Discounts

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[Codeforces] Round #165 (Div. 2) B. Multithreading|PSCodeforces|Problem Solving-Greedy

Codeforces Round #165 (Div. 2) B. Multithreading

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[Codeforces] Round #158 (Div. 2) A. Adding Digits|PSCodeforces|Problem Solving-Math-Greedy-Numeric Theory

Codeforces Round #158 (Div. 2) A. Adding Digits

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