2018 Multi-University, HDU Day 1

Problem A

Solved by ultmaster. 00:41 (+2)

题意：求 $a$, $b$, $c$ 满足都是 $n$ 的因数也和为 $n$。

题解：各种筛各种暴力发现都布星。过了好久才开始考虑数学性质，好像只能分成 1/3 * 3 或者 1/2 + 1/4 + 1/4 其它都布星。

Problem B

Solved by ultmaster. 04:33 (+3)

Problem C

Solved by zerol. 00:19 (+)

Problem D

Solved by kblack. 00:56 (+1)

Problem F

Unsolved. 04:50 (-1)

Problem G

Solved by zerol. 03:25 (+1)

Problem K

Solved by kblack. 00:28 (+4)