SP12304 INVDIV - Smallest Inverse Sum of Divisors
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UVA10789 Prime Frequency
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P11266 【模板】完全体·堆
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原题链接
P3016 [USACO11FEB] The Triangle S
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UVA11247 Income Tax
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常用质数
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P10937 車的放置
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原题链接
CF2033E Sakurako, Kosuke, and the Permutation
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CF2033F Kosuke's Sloth
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CF2033B Sakurako and Water
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