又到了摸鱼的时候了23333 A. Little C Loves 3 I 题意:给一个数,分解为不被3整除的3个数 题解:构造,如果这个数被3整除,就构造为1,1,n-2;否则构造为1,2,n-3 1 class Solution(object): 2 def run(self): 3 n = in ...
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其他好文 时间:
2018-09-22 18:17:52
阅读次数:
144
Description My girlfriend loves 7 very much, she thinks it is lucky! If an integer contains one or more 7, she will think it is lucky too! Description ...
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其他好文 时间:
2018-09-21 15:22:06
阅读次数:
186
Aeroplane chess Aeroplane chess Hzz loves aeroplane chess very much. The chess map contains N+1 grids labeled from 0 to N. Hzz starts at grid 0. For e ...
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其他好文 时间:
2018-09-19 23:31:07
阅读次数:
207
262144K Mur loves hash algorithm, and he sometimes encrypt another one's name, and call him with that encrypted value. For instance, he calls Kimura K ...
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其他好文 时间:
2018-09-13 01:10:37
阅读次数:
148
I. Characters with Hash Mur loves hash algorithm, and he sometimes encrypt another one's name, and call him with that encrypted value. For instance, h ...
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其他好文 时间:
2018-09-09 18:14:52
阅读次数:
293
是长者的题目。~~其实还是有点水的~~。 下面是黑历史 ~~准队爷dzy第一次提交四道题182分。~~ ~~然后dzy告诉我他那次是提交184分~~ ~~184就184吧,反正和182没啥区别~~ ~~机房里有个只提交了两道题的神仙200分~~ ~~我第一次评测275分~~ 黑历史结束 当然最后准队 ...
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其他好文 时间:
2018-09-09 15:28:17
阅读次数:
151
Travel PP loves travel. Her dream is to travel around country A which consists of N cities and M roads connecting them. PP has measured the money each ...
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其他好文 时间:
2018-09-08 22:36:31
阅读次数:
163
https://www.luogu.org/problemnew/show/P2418 暴力 DP 做这题只有 30 分 考虑用线段树优化这个 DP 先处理一下整个房间都膜拜一个人的情况,然后将 1 的当成 1, 2 当成 1,处理前缀和,可以发现对于前缀和为 x 的情况,只能从前缀和为 [x k, ...
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其他好文 时间:
2018-09-07 22:05:13
阅读次数:
195
Favorite Dice BuggyD loves to carry his favorite die around. Perhaps you wonder why it's his favorite? Well, his die is magical and can be transformed ...
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其他好文 时间:
2018-08-26 01:12:03
阅读次数:
201
Description ? "看题戳我" 给你一个序列,要求支持区间加斐波那契数列和区间求和。$~n \leq 3 \times 10 ^ 5, ~fib_1 = fib_2 = 1~$. Solution ? 先来考虑一段斐波那契数列如何快速求和,根据性质有 $$ \begin {align} f ...
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其他好文 时间:
2018-08-25 14:04:14
阅读次数:
339