题目链接:New Year's Problem 从题目的描述中很容易看出来这是一道二分的题目,那么怎么去考虑呢?首先最多选n-1个商店,那也就是说至少有一个商店要选两个人或以上,因此我们的check函数可以去一个个枚举商店,看看是否有一个商店满足两个人,然后每个人选的价值都要大于mid。 代码附上: #include <bits/stdc++.h>#define int long long
https://www.cnblogs.com/CQzhangyu/p/8227408.html http://www.mamicode.com/info-detail-2146477.html 题意:给定M=2m−1M=2m−1,我们称一个集合S是好的,当且仅当它满足:1.∀a∈S,a xor M∈S∀a∈S,a xor M∈S,2.∀a,b∈S,a and b∈S∀a,b∈S,a and b
D. New Year Santa Network time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output New Year is coming in Tree World! In this w
B. New Year Permutation time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output User ainta has a permutation p1, p2, ..., pn.
录音 Retelling|Gap Year gap year 转写 im a trainee from DJ teaching interpretation. And I'm going to talk about taking a gap year. It's Most of our popular off for students are taken after col
Polycarp is sad — New Year is coming in few days but there is still no snow in his city. To bring himself New Year mood, he decided to decorate his house with some garlands. The local store introduce
This way 题意: 给你一个长度为n的数组,你要修改其中的某些值使得任意的l,r, g c d ( a [ l ] , a [ l + 1 ] . . . a [ r ] ) = = r − l + 1 gcd(a[l],a[l+1]...a[r])==r-l+1 gcd(a[l],a[l+1]...a[r])==r−l+1的情况不存在。 对于所有的前缀都做一遍。 题解: 这道题…
产品浏览过滤插件-Year Make Model Posted 星期六, 07/25/2009 - 00:12 by Kevin Von 本插件可以在Magneto前台浏览产品是通过Vehicle,Model和Year来过滤浏览的商品,这个主要是提高用户体验的。如果有需要的话可以使用这个插件 - Year Make Model。看下面效果图: Magento Connect:m
Lunar New Year and a Recursive Sequence 题解 忽的发现这题难度只有2400,还是我数学太菜了 如果像原式那样对整个式子每次都进行次方的更新的话,明显会T掉,我们可以对它的幂进行更新,因为做出贡献的项只有这一个,每个都可以只用表示出来。 设为的次方,可得,可如果暴力转移的话级别的明显会让我们T掉。 发现这个式子很容易用矩阵乘法实现转换,矩阵乘法就可
Codeforces 1106F Lunar New Year and a Recursive Sequence (数学、线性代数、线性递推、数论、BSGS、扩展欧几里得算法) 哎呀大水题。。我写了一个多小时。。好没救啊。。 数论板子X合一? 注意: 本文中变量名称区分大小写。 题意: 给一个\(n\)阶递推序列\(f_k=\prod^{n}_{i=1} f_{k-i}b_i\mod P
As meticulous Gerald sets the table and caring Alexander sends the postcards, Sergey makes snowmen. Each showman should consist of three snowballs: a big one, a medium one and a small one. Sergey’s tw
传送门 f[i][j] 表示有 i 个 a, j 个 ab 的期望, 设 A 为选 a 的概率, B 为选 b 的 如果 i + j >= k 那么再放一个 b 就可以结束, 这种情况的期望就是 转移的话 初始状态如果是 0, 0 的话 显然会死循, 因为一开始可能为 bbbbbbb... 但由于 A = 1 - B, 所以上面那个式子等价于 所以初始状态设为 f[1]
文章目录 一、 Beautiful Year总结 一、 Beautiful Year 本题链接:Beautiful Year 题目: A. Beautiful Year time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard out
New Year Permutation time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output User ainta has a permutation p1, p2, ..., pn. As
New Year Transportation time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output New Year is coming in Line World! In this wor