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_Tyrue_'s blog

I need some problems that use the 'Exchange arguments' method.
By _Tyrue_, history, 5 hours ago, In English

Problems from AtCoder and Codeforces are both fine, preferably those where the 'Exchange arguments' method is used to optimize greedy algorithms.

Thanks~

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4 hours ago, # |
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Why doesn't anyone give me any problems? QWQ

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3 hours ago, # |
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https://mirror.codeforces.com/problemset/problem/1793/E

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2 hours ago, # |
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https://mirror.codeforces.com/contest/1914/problem/E2

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38 minutes ago, # |
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https://oj.uz/problem/view/NOI22_gymbadges

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