ARC100 D - Equal Cut Description: 给出长度为n的序列A,把这个序列分成连续的四段,最小化极差. \(4≤n≤2×10^5,4≤n≤2×10^5\) Solution:枚举中间的分割点,左右二分出极差最小的位置更新答案. code: #include<cstdio> #include<cstring> #include<iostream> #include<cmath> using namespace std; const i…

Equal Cut 思路: 枚举中间那个分界点,然后两边找使得切割后差值最小的点,这个可以用双指针 代码: #include<bits/stdc++.h> using namespace std; #define fi first #define se second #define pi acos(-1.0) #define LL long long #define mp make_pair #define pb push_back #define ls rt<<1, l, m #…

Equal Cut 题目描述 Snuke has an integer sequence A of length N. He will make three cuts in A and divide it into four (non-empty) contiguous subsequences B,C,D and E. The positions of the cuts can be freely chosen. Let P,Q,R,S be the sums of the elements…

原文链接https://www.cnblogs.com/zhouzhendong/p/9251420.html 题目传送门 - ARC100D 题意 给你一个长度为 $n$ 的数列,请切 $3$ 刀,形成 $4$ 个连续非空子序列,问这 $4$ 个非空子序列的各自的元素和 的极差为多少. $n\leq 2\times 10 ^5$ 题解 如果切一刀,那么问题就很简单,尽量选中间的就可以了. 可以二分一下在 $O(\log n)$ 的复杂度内解决. 于是本题可以先枚举一下中间那条线,然后对于两边转…

题面在这里! 我们枚举一下第2和第3段的分界点,显然这种情况下 第1与第2  和  第3与第4  之间的分界点都只有两种情况可能最优,吧这四种情况讨论一下就好了. 两边的分界点可以单调扫过去... #include<iostream> #include<cstdio> #include<cstdlib> #include<algorithm> #include<cmath> #include<cstring> #define ll l…

传送门 分析 首先我们想到的肯定是n^3暴力枚举,但这显然不行.然后我们想到的就是二分了,但这题没有什么单调性,所以二分也不行.这时候我就想到了先枚举找出p2的位置再在它的左右两边找到p1和p3,但是良心的样例2告诉了我这样是不行的,因为让p2的位置最优并不意味着整体最优.之后我发现可以枚举p2,在这个基础上枚举p1和p3,因为如果之前p1或p3向右移了几位那它在之后一定不会向左移,这样我们有优化了一小点.根据这个思路我们不难再联想到如果p1+1的答案不如现在的p1优,那p1+2也一定不会更优,…

Ice-sugar Gourd Time Limit: 5000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1490    Accepted Submission(s): 470 Problem Description Ice-sugar gourd, "bing tang hu lu", is a popular snack in Beijing of…

C - Linear Approximation 找出\(A_i - i\)的中位数作为\(b\)即可 题解 #include <iostream> #include <cstring> #include <cstdio> #include <algorithm> #define enter putchar('\n') #define space putchar(' ') #define fi first #define se second #define…

Ice-sugar Gourd Time Limit: 5000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1492    Accepted Submission(s): 471 Problem Description Ice-sugar gourd, "bing tang hu lu", is a popular snack in Beijing of…

A - Multiple of 2 and N Time Limit: 2 sec / Memory Limit: 1024 MB Score : 100100 points Problem Statement You are given a positive integer NN. Find the minimum positive integer divisible by both 22 and NN. Constraints 1≤N≤1091≤N≤109 All values in inp…

Ice-sugar Gourd Time Limit: 5000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 936    Accepted Submission(s): 329 Problem Description Ice-sugar gourd, “bing tang hu lu”, is a popular snack in Beijing of China.…

链接 https://arc100.contest.atcoder.jp/ C Linear Approximation 题解 把ai减去i后排序, 我们要的b就是排完序后的中位数 Code #include<bits/stdc++.h> using namespace std; typedef long long ll; ll read(){ ll x=,f=;char c=getchar(); ;c=getchar();} +c-';c=getchar();} return x*f; }…

传送门 C - Linear Approximation 题意: 求 \[ \sum_{i=1}^nabs(A_i-(b+i)) \] \(A_i,b\)给出. 思路: 将括号拆开,变为\(A_i-i-b\),所以将所有的\(A_i\)减去\(i\),然后就是一个经典问题了. Code #include <bits/stdc++.h> #define MP make_pair #define fi first #define se second #define sz(x) (int)(x).s…

Cut the Cake Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 263    Accepted Submission(s): 113 Problem Description MMM got a big big big cake, and invited all her M friends to eat the cake toge…

Given n pieces of wood with length L[i] (integer array). Cut them into small pieces to guarantee you could have equal or more than k pieces with the same length. What is the longest length you can get from the n pieces of wood? Given L & k, return th…

  MMM got a big big big cake, and invited all her M friends to eat the cake together. Surprisingly one of her friends HZ took some (N) strawberries which MMM likes very much to decorate the cake (of course they also eat strawberries, not just for dec…

Given an array with n integers, you need to find if there are triplets (i, j, k) which satisfies following conditions: 0 < i, i + 1 < j, j + 1 < k < n - 1 Sum of subarrays (0, i - 1), (i + 1, j - 1), (j + 1, k - 1) and (k + 1, n - 1) should be…

Cut the Cake Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 300    Accepted Submission(s): 135 Problem Description MMM got a big big big cake, and invited all her M friends to eat the cake toge…

题目链接:http://codeforces.com/problemset/problem/883/H Time limit: 3000 ms Memory limit: 262144 kB Kolya has a string s of length n consisting of lowercase and uppercase Latin letters and digits. He wants to rearrange the symbols in s and cut it into th…

Given n pieces of wood with length L[i] (integer array). Cut them into small pieces to guarantee you could have equal or more than k pieces with the same length. What is the longest length you can get from the n pieces of wood? Given L & k, return th…

Cut the Cake Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1657    Accepted Submission(s): 806 Problem Description MMM got a big big big cake, and invited all her M friends to eat the cake tog…

183.Wood Cut[hard] Given n pieces of wood with length L[i] (integer array). Cut them into small pieces to guarantee you could have equal or more than k pieces with the same length. What is the longest length you can get from the n pieces of wood? Giv…

Box Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2374    Accepted Submission(s): 718 Problem Description There are N boxes on the ground, which are labeled by numbers from 1 to N. The boxes…

Given a non-empty integer array, find the minimum number of moves required to make all array elements equal, where a move is incrementing a selected element by 1 or decrementing a selected element by 1. You may assume the array's length is at most 10…

Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n - 1 elements by 1. Example: Input: [1,2,3] Output: 3 Explanation: Only three moves are needed (remem…

Given a non-empty array containing only positive integers, find if the array can be partitioned into two subsets such that the sum of elements in both subsets is equal. Note: Both the array size and each of the array element will not exceed 100. Exam…

参考:http://stackoverflow.com/questions/34584416/nested-loops-with-arrays You are going to be given an array of integers. Your job is to take that array and find an index N where the sum of the integers to the left of N is equal to the sum of the integ…

Minimum Cut Time Limit: 10000MS   Memory Limit: 65536K Total Submissions: 9302   Accepted: 3902 Case Time Limit: 5000MS Description Given an undirected graph, in which two vertices can be connected by multiple edges, what is the size of the minimum c…

首先,==有很多限制,如Integer 类型的值在[-128,127] 期间,Integer 用 “==”是可以的(参考),超过范围则不行,那么使用equal则代替则完全ok public static void main(String[] args) { Long prop=4004L; Long prop1=4004l; Integer prop2=4004; Integer prop3=4004; if(prop2.equals(prop3)){ System.out.println("h…

一.介绍 最近公司需要针对Final Cut Pro(FCP)开发一款效果插件,用于对公司自己开发的视频格式进行后期处理.Final Cut Pro是苹果公司推出的一款视频剪辑软件,因此需要在OSX平台上进行开发.目前最新版本的Final Cut Pro已经更名为Final Cut Pro X,因此也可简称FCPX.网络上针对FCPX的可用插件不少,但是相关的开发资料就显得非常匮乏,Google了半天都没找到定点信息.没办法,关键时刻还得去看看官方文档.寻寻觅觅终于还是发现了一些有用的信息.公司…