In The Green Zone Codechef Solution | May CHALLENGE


In The Green Zone Codechef Solution

There are NN cans lying on the X-axis at points XiXi (1≤i≤N)(1≤i≤N). Each of the N cans is associated with two values AiAi and BiBi. Also, the segment between the points LL and RR (L≤R)(L≤R) is considered to be green zone including the points LL and RR. There are two types of operations –

1.1. Select a can ii out of the NN cans and move it one unit in either direction along the axis, i.e. if before the operation can is at XiXi then after the operation, it moves to either Xi+1Xi+1 or Xi−1Xi−1. This costs BiBi coins and it can be performed any number of times for each of the cans.

2.2. Choose any integer kk and shift the green zone to the segment between L′L′ and R′R′, where L′L′ and R′R′ are the mirror images of points RR and LL with respect to line X=kX=k respectively. This operation can be performed at most once.

After all the operations, you get number of coins equal to sum of values of AiAi of the cans which lie in the final green zone. We define the net coins as:
Number of coins you get – Number of coins spentNumber of coins you get – Number of coins spent

Find the maximum possible net coins you can earn.

Input Format

  • First line will contain TT, number of testcases. Then the testcases follow.
  • Each of the testcases consists of four lines.
  • First lines consists of three integers NN, LL and RR.
  • Next line consist of NN space separated integers X1,X2,…,XNX1,X2,…,XN.
  • Next line consist of NN space separated integers A1,A2,…,ANA1,A2,…,AN.
  • Next line consist of NN space separated integers B1,B2,…,BNB1,B2,…,BN.

Output Format

For each testcase, output in a single integer, the maximum number of net coins you can earn.


  • 1≤T≤10001≤T≤1000
  • 1≤N≤3⋅1051≤N≤3⋅105
  • 1≤Ai,Bi≤1091≤Ai,Bi≤109
  • −109≤L≤R≤109−109≤L≤R≤109
  • −109≤Xi≤109−109≤Xi≤109
  • Sum of NN over all test cases does not exceed 3⋅1053⋅105

Sample Input 1 

1 7 10
3 7 10
2 8 1
6 20 1
1 3 2

Sample Output 1 



Test case 11 : Lets choose the axis at X=5X=5 and Shift the green zone in the range [0,3][0,3], such that can lies in green zone. So, there is no need for operation of type 11 and total number of coins earned is A1A1, i.e. 66.

Test case 22 : Choose the axis at X=8X=8, so the new green zone lies in the region [6,9][6,9]. Move the can 11 to X=6X=6. Number of coins received is equal to A1+A2A1+A2 and number of coins spent is 4⋅B14⋅B1. So, the net coins earned is 20+6−4=2220+6−4=22. This is also the maximum possible.

In The Green Zone Codechef  SOLUTION

Download Code
login to google play console, youtube video search by image, how to add a google account, which are the google apps, what is the google app, how to add a new google account, all the google apps, which service is the part of google, adsetting google, google data studio, google DNS, GCP console, bigquery, google studio, google api console, google app engine, anthos, google apis, google public DNS, google audio, google launcher, gcloud console, google compute engine, google webmaster console, google logged-in devices, gdrive unlimited,google console tools,google studio login,my google voice,hey google service,find similar images google, my google forms, www google com bd search, search using images in google,google image search scan,google sea console,website console google, google sound, gdrive storage for students, google site console, google console login, webmaster console, searc h console, google server down, google backup login, photo finder google, google products and services, google console tool, google image check, google cloud search is used for, google dashboard studio, google voice and audio activity,gcp dashboards, google services down, google go app, google dns down, google image identifier,check picture on google,google new launcher,google image finder online,image check google google google go, image finder on google, finding images on google, photo find google, find a picture in google, find the photo on google, picture find google, image find on google, find with photo google, image finder google online, google find with image, photo finder in google, google find image search, search using image in google, search on google with image, google server down today, google server down news

Read More Post Here

Leave a Comment

Your email address will not be published. Required fields are marked *