2018 CCPC Online Contest

oxx

Problem A

Solved by dreamcloud.

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Problem B

Unsolved.

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Problem C

Solved by oxx1108.

题意：在环中重载加法和乘法，使得在满足$(m + n) ^ p = m ^ p + n ^ p$ $p$是素数

题解：直接重载取模意义下的加和乘就行了。证明费马小定理。

Problem D

Solved by oxx1108.

题意：给定$a$和$n$求$b$和$c$，求满足$a ^ n + b ^ n = c ^ n$ 一组$b$,$c$

题解：n一定等于1或者2，然后1的时候显然，2的时候勾股数构造一下就可以了。（$a$为2时平方无解，但是出题人友好地去掉了这个情况）

Problem E

Solved by oxx1108.

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Problem F

Unsolved.

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Problem G

Unsolved.

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Problem H

Unsolved.

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Problem I

Solved by oxx1108.

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Problem J

Solved by dreamcloud.

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ECNU Foreigners

Problem A

Solved by kblack. 00:49 (+)

Problem B

Unsolved.

Problem C

Solved by zerol. 00:50 (+)

Problem D

Solved by zerol. 00:29 (+)

Problem E

Solved by ultmaster. 02:50 (+1)

Problem F

Unsolved. (-1)

Problem G

Solved by zerol. 03:03 (+3)

Problem H

Unsolved.

Problem I

Solved by kblack. 00:26 (+1)

Problem J

Solved by ultmaster. 00:36 (+)