题意 两个1e5的数组a,b,定义\(S(t)=\left \lfloor \frac{t-b_i}{a_i} \right \rfloor\),有三个操作 1 x y:将\(a[x]\)变为\(y\) 2 x y:将\(b[x]\)变为\(y\) 3 x:求使得\(S(t)\geq k\)的最小\(k\) 其中\(a_i\leq 1000\),\(b_i,k\leq 1e9\) 思路 这题主要突破口在于\(a_i\leq 1000\) 我们先从下整除下手, \(\left \lfloor \f…

题目链接: hdu:http://acm.hdu.edu.cn/showproblem.php?pid=5273 bc:http://bestcoder.hdu.edu.cn/contests/contest_chineseproblem.php?cid=604&pid=1002 Dylans loves sequence  Accepts: 250  Submissions: 806  Time Limit: 2000/1000 MS (Java/Others)  Memory Limit:…

HDU 5063 Operation the Sequence 题目链接 把操作存下来.因为仅仅有50个操作,所以每次把操作逆回去执行一遍,就能求出在原来的数列中的位置.输出就可以 代码: #include <cstdio> #include <cstring> #include <algorithm> using namespace std; typedef long long ll; const int N = 100005; const ll MOD = 1000…

HDU - 1711 A - Number Sequence   Given two sequences of numbers : a[1], a[2], ...... , a[N], and b[1], b[2], ...... , b[M] (1 <= M <= 10000, 1 <= N <= 1000000). Your task is to find a number K which make a[K] = b[1], a[K + 1] = b[2], ...... ,…

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// 判断相同区间(lazy) 多校8 HDU 5828 Rikka with Sequence // 题意:三种操作,1增加值,2开根,3求和 // 思路:这题与HDU 4027 和HDU 5634 差不多 // 注意开根号的话,遇到极差等于1的,开根号以后有可能还是差1.如 // 2 3 2 3... // 8 9 8 9... // 2 3 2 3... // 8 9 8 9... // 剩下就是遇到区间相等的话,就直接开根号不往下传 #include <bits/stdc++.h> u…

题目链接:hdu 4983 Wow! Such Sequence! 题目大意:就是三种操作 1 k d, 改动k的为值添加d 2 l r, 查询l到r的区间和 3 l r. 间l到r区间上的所以数变成近期的斐波那契数,相等的话取向下取. 解题思路:线段树.对于每一个节点新增一个bool表示该节点下面的位置是否都是斐波那契数. #include <cstdio> #include <cstring> #include <cstdlib> #include <algo…

Problem K. Master of SequenceTherearetwosequencesa1,a2,··· ,an, b1,b2,··· ,bn. LetS(t) =∑n i=1⌊t−bi ai ⌋. Therearemoperationswithin three kinds as following: • 1 x y: change value ax to y. • 2 x y: change value bx to y. • 3 k: ask min{t|k ≤ S(t)} Inp…

其实和昨天写的那道水题是一样的,注意爆LL $1<=n,k<=1e9$,$\sum\limits_{i=1}^{n}(k \mod i) = nk - \sum\limits_{i=1}^{min(n,k)}\lfloor\frac{k}{i}\rfloor i$ /** @Date : 2017-09-21 19:55:31 * @FileName: HDU 2620 分块底数优化 暴力.cpp * @Platform: Windows * @Author : Lweleth (SoungE…

Master of Sequence 时间限制: 10 Sec  内存限制: 128 MB 题目描述 There are two sequences a1,a2,...,an , b1,b2,...,bn . Let . There are m operations within three kinds as following:• 1 x y: change value ax to y.• 2 x y: change value bx to y.• 3 k: ask min{t|k≤S(t)}…