原文:CF-796C

C. Bank Hacking time limit per test seconds memory limit per test megabytes input standard input output standard output Although Inzane successfully found his beloved bone, Zane, his owner, has yet t ...

2017-05-03 16:27 0 1294 推荐指数:

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CF-796B

B. Find The Bone time limit per test 2 seconds memory ...

Wed May 03 05:15:00 CST 2017 0 1995
CF291-C

C. Watto and Mechanism time limit per test 3 seconds memory limit per test 256 megabytes input ...

Mon Feb 16 00:51:00 CST 2015 0 2990
CF697E && CF696C PLEASE

题意:给你三个杯子,一开始钥匙放在中间的杯子里,然后每一回合等概率将左右两个杯子中的一个与中间杯子交换。求n回合之后钥匙在中间杯子的概率。这里要求概率以分数形式输出,先化成最简,然后对1e9 + 7取 ...

Sat Apr 15 00:03:00 CST 2017 0 1456
CF 1244 C - The Football Season

C - The Football Season 先考虑求解 \[x\times w + y\times d=p \] 若存在一组解 \[\begin{cases} x_0\\ y_0 = kw + v & (0<v<w)\\ \end{cases ...

Mon Oct 14 07:27:00 CST 2019 4 448
CF1386C Joker

原题链接 这是一道有(du)趣(liu)的数据结构题 首先发现无修改询问,所以珂以莫队。然后发现你要维护当前的图是否为二分图,这显然珂以大力LCT维护最大生成树。然后复杂度就变成了惊人的\(O(N ...

Tue Jul 28 07:00:00 CST 2020 7 146
CF553C Love Triangles

题目链接 题意:给定n个点,给出一些边权为0/1的边,构造完全图,满足对于任何一个三元环,三条边权和为奇。求符合条件的完全图数量,对\(1e9+7\)取模。 分析:其实原题给定的边权是love/h ...

Thu Dec 20 06:27:00 CST 2018 1 557
CF1458C Latin Square

CF1458C Latin Square 题目来源:Codeforces, Codeforces Round #691 (Div. 1), CF#691, CF1458C Latin Square 题目链接 本题题解 发现 \(\texttt{RLDU}\) 和 \(\texttt{IC ...

Sun Dec 20 23:20:00 CST 2020 0 336
 
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