2020 CCPC Online Contest

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Revision as of 13:59, 23 September 2020 by Once (talk | contribs) (→‎Problem B)
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Problem A

Unsolved.

Problem B

Solved by all. 02:24:09(-1)

每个节点向其某个质因子连边，之后所有素数向 $2$ 连边。答案即为区间自然数和加上区间素数和，用 min25 筛出即可。

Problem C

Problem D

Problem E

Problem F

Problem G

Problem H

Problem I

Problem J

Problem K

Problem L

Problem M

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