You can make hacks only if all versions of the problem are solved. If you've seen these problems, a virtual contest is not for you - solve these problems in the archive. Interesting Array Problem - Codeforces For example let A=[1,9,11,19] and k=10. The following code is similar to your method 2: This code probably looks more like C than Python, but I expect it to be fast and readable. Virtual participation. You've read 0 % Song Hayoung. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. What invariant is maintained in this solution? Little Pony and Sort by Shift.cpp, codeforces 467A. Note: AND of the array is defined as the bitwise AND(&) of all the array elements. "Fleischessende" in German news - Meat-eating people? If there is no such subarray, output $$$0$$$. CodeForces | Another Array Problem - StopStalk You signed in with another tab or window. For each suffix, number of distinct substrings equals to cnt[i] = n - sa[i] - lcp[i]. Reverse a Substring.cpp, codeforces 1155 B. 1) B1. Problem - 1367B - Codeforces In the first sample, the subarray $$$[1, 1, 2, 2, 3, 3]$$$ is good, but $$$[1, 1, 2, 2, 3, 3, 3]$$$ isn't: in the latter there are $$$3$$$ occurrences of number $$$3$$$, and no other element appears $$$3$$$ times. But this problem from spoj requires lcs from 2 strings . Problem - 1535B - Codeforces Another One Bites The Dust.cpp, codeforces 1152 B. Neko Performs Cat Furrier Transform.cpp, codeforces 1153 B. Serval and Toy Bricks.cpp, codeforces 1155 A. Evil Underscores.cpp, codeforces 1288 B. Could ChatGPT etcetera undermine community by making statements less significant for us? For each number maintain a set that tells you at these bits position the above property is satisfied for the number and then try to find the one that will help in setting the AND to the maximum value as we can modify only one number. Problem - 300a - Codeforces Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. ivplay, if you ever happen to meet me, do ask for a treat. Solve more problems and we will show you more here! To see all available qualifiers, see our documentation. Weakened Common Divisor.cpp, codeforces 1027 B. Virtual contest is a way to take part in past contest, as close as possible to participation on time. [Codeforces] Round 700 (Div. 1) B1. Painting the Array I | SUMFIBlog Here's an interesting problem: given a string output it's K-th lexicographically unique substring. Creating the Contest.cpp, codeforces 1029 C. Maximal Intersection.cpp, codeforces 1029A. The only programming contests Web 2.0 platform. It can be shown that at least one beautiful array always exists. The difference between the versions is in the constraints on the array elements. My bechamel takes over an hour to thicken, what am I doing wrong. The first line contains a single integer $$$t$$$ ($$$1 \le t \le 1000$$$) the number of test cases. Problem Name: Array with Odd Sum. 800: x15024: 1838F Stuck Conveyor . Two Arrays And Swaps.cpp, codeforces 1353 D. Constructing the Array.cpp, codeforces 1358 B. Maria Breaks the Self-isolation.cpp, codeforces 1359 B. We can form [9,9,11,19],[1,11,11,19],[1,9,19,19] so answer will be X=9, Y=2. Editorials. 2, based on VK Cup 2018 Round 1), Educational Codeforces Round 43 (Rated for Div. Given an array of integers say A and a number k.One operation means choosing an index i of array and increasing A [i] by 1.You can use this operation on a particular index multiple times.You perform at most k operations (not necessarily on a single index) on this array after which some number X is . Call an array b b of n n integers imbalanced if it satisfies the following: for each 1 i n 1 i n, there are exactly ai a i indices j j ( 1 j n 1 j n) such that bi +bj > 0 b i + b j > 0, where i i and j j are not necessarily distinct. Codechef# ANUUND - Ups and Downs; ANUMLA - Mahesh and his lost array Update yet-another-array-partitioning-task.cpp. Exam in BerSU (hard version).cpp, codeforces 1186 A. Vus the Cossack and a Contest.cpp, codeforces 1186 C. Vus the Cossack and Strings.cpp, codeforces 1186 D. Vus the Cossack and Numbers.cpp, codeforces 1191 A. Tokitsukaze and Enhancement.cpp, codeforces 1191 B. Tokitsukaze and Mahjong.cpp, codeforces 1191 C. Tokitsukaze and Discard Items.cpp, codeforces 1194 A. Common Subsequence.cpp, codeforces 1384 C. String Transformation 1.cpp, codeforces 1385 A. Single Wildcard Pattern Matching.cpp, codeforces 1023A. suffix array related problems - Codeforces Generate state |00 + |01 + |10 (, A2. You can compile all the problems by issuing the following command: If you want to compile only a specific problem, issue the following command, replacing with the section and identifier of the problem you want to compile (see section "Problems Solved" for the list of possible identifiers): Running a compiled problem is just a matter of executing a command similar to the next one, replacing with the identifier of the desired problem: Unless stated otherwise, every problem in this repository reads from the standard input and writes to the standard output. Interview with Oleg.cpp, codeforces 731 A. If nothing happens, download Xcode and try again. To learn more, see our tips on writing great answers. It is supported only ICPC mode for virtual contests. Find the minimum number of moves in which you can make the array $$$a$$$ good, or say that this is not possible. The Fair Nut and Elevator.cpp, codeforces 1088 A. Ehab and another construction problem.cpp, codeforces 1088 B. Ehab and subtraction.cpp, codeforces 109 A. Interesting problem. Can somebody be charged for having another person physically assault someone for them? Markland-N.cpp, codeforces 1294 B. Let's call a pair of indices i, j good if 1 i < j n and gcd ( a i, 2 a j) > 1 (where gcd ( x, y) is the greatest common divisor of x and y ). If you've seen these problems, a virtual contest is not for you - solve these problems in the archive. 2023-07-12 | PS Codeforces. [Codeforces] Round 700 (Div. CodeForces | Sort the Array Preparation for International Women's Day.cpp, codeforces 1133 D. Zero Quantity Maximization.cpp, codeforces 1136 A. Nastya Is Reading a Book.cpp, codeforces 1136 B. Nastya Is Playing Computer Games.cpp, codeforces 1136C. The following is the list of the problems solved. Little Elephant and Rozdil.cpp, Codeforces 205 B. Painting the Array I. Is there a word for when someone stops being talented? Make Product Equal One.cpp, codeforces 1207 A. Skip this Later. Example 1: Input: nums = [-2,1,-3,4,-1,2,1,-5,4] Output: 6 Explanation: The subarray [4,-1,2,1] has the largest sum 6. 2), Codeforces Round #468 (Div. It is supported only ICPC mode for virtual contests. Yet Another Two Integers Problem.cpp. Problems marked with are done, while problems with are not complete or aren't efficient enough for the problem's limits. Problem - 1547F - Codeforces Points in Segments.cpp, codeforces 1016B. You should output exactly one integer the length of the longest subarray of the array whose most frequent value is not unique. For first string number of distinct substrings are (len- (indexOf1stString) + 1). bn+2 = x b n + 2 = x; The. Site: . Virtual contest is a way to take part in past contest, as close as possible to participation on time. Solve more problems and we will show you more here! Card Constructions.cpp, codeforces 1348 B. Phoenix and Beauty.cpp, codeforces 1352 A. New Year and the Treasure Geolocation (, C. New Year and the Sphere Transmission (, D. New Year and the Permutation Concatenation (, A1. 8 years ago, # ^ |. More formally, an array is good if for all $$$i$$$ ($$$0 \le i \le n - 1$$$) the equality $$$i \bmod 2 = a[i] \bmod 2$$$ holds, where $$$x \bmod 2$$$ is the remainder of dividing $$$x$$$ by 2. For example, if $$$a = [16, 24, 10, 5]$$$ then $$$b = [\gcd(16, 24)$$$, $$$\gcd(24, 10)$$$, $$$\gcd(10, 5)$$$, $$$\gcd(5, 16)]$$$ $$$= [8, 2, 5, 1]$$$. Let S S be the sum of all elements of the array a a. for every pair of adjacent integers from the array (bi,bi+1) ( b i, b i + 1), either bi b i divides bi+1 b i + 1, or bi+1 b i + 1 divides bi b i (or both); Your task is to find any beautiful array. Some codeforces problem solutions. It is supported only ICPC mode for virtual contests. Little C Loves 3 I.cpp, codeforces 1051 B. Increasing Subsequence (easy version).cpp, codeforces 1157 C2. Composite Coloring.cpp, codeforces 1335 B. Construct the String.cpp, codeforces 1335 C. Two Teams Composing.cpp, codeforces 1337 A. Ichihime and Triangle.cpp, codeforces 1337 C. Linova and Kingdom.cpp, codeforces 1341 C. Nastya and Strange Generator.cpp, codeforces 1343 C. Alternating Subsequence.cpp, codeforces 1345 B. Thanks for contributing an answer to Code Review Stack Exchange! The problem statement has recently been changed. Codeforces 1409 E. Two Platforms.cpp. If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. GitHub - kantuni/Codeforces: Solutions to Codeforces Problems 2), Manthan, Codefest 18 (rated, Div. Single Wildcard Pattern Matching_Saurav.cpp, codeforces 1025 B. In the second test case, in the first move, you need to swap the elements with indices $$$0$$$ and $$$1$$$. Problem page - CodeForces | Array with Odd Sum. Should I trigger a chargeback? Print $$$t$$$ numbers answers for each test case. Solve more problems and we will show you more here! just received easy AC with suffix array, time = 0.03, can u please share the idea? Painting the Array I. Toggle site. Is there any mistake in this (after finding lcp array)? sign in Exam in BerSU (easy version).cpp, codeforces 1185 C2. CodeForces | Array with Odd Sum - StopStalk Minimizing the String.cpp, codeforces 1076 B. Divisor Subtraction.cpp, codeforces 1080 B. Margarite and the best present.cpp, codeforces 1084 A. If you just want to solve some problem from a contest, a virtual contest is not for you . If you've seen these problems, a virtual contest is not for you - solve these problems in the archive. Tags: Show Tags. 2), Microsoft Q# Coding Contest - Summer 2018 - Warmup, Microsoft Q# Coding Contest - Summer 2018, AIM Tech Round 5 (rated, Div. Visit Array Positions to Maximize Score. - Codeforces If nothing happens, download GitHub Desktop and try again. 2, based on VK Cup 2017 Round 3), Codeforces Round #424 (Div. Skip this Later. The only programming contests Web 2.0 platform. I have learned suffix array from this pdf:- Suffix arrays a programming contest approach Adrian Vladu and Cosmin Negrueri (appearedin GInfo 15/7, November2005). If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. The following is the list of the problems solved. 1, by Meet IT). Codeforces 1416 B. Generate superposition of all basis states (, A2. Articles 8410 Tags 193 Categories 60. Make Them Equal.cpp. Yet Another Dividing into Teams.cpp, codeforces 1249 B1. Choose Two Numbers.cpp, codeforces 1206 B. AMA, Codeforces Beta Round #25 Solution Analysis. The only programming contests Web 2.0 platform. If Phileas Fogg had a clock that showed the exact date and time, why didn't he realize that he had reached a day early? Many Equal Substrings.cpp, codeforces 1047 A. These strings are in lexigographic order, so I just subtract k until I get 0. View submission Copy to Clipboard. If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. Codeforces 1409 A. It is supported only ICPC mode for virtual contests. Problem - 1848F - Codeforces The Eternal Immortality.cpp, codeforces 935 A. Fafa and his Company.cpp, codeforces 959A. Then we can calculate the prefix sums for cnt array and answer the queries using binary search or two pointers. CodeForces | Sasha and Array thanks a lot! The second line contains $$$n$$$ integers $$$a_0, a_1, \dots, a_{n - 1}$$$ ($$$1 \le a_i \le 10^6$$$). Then $$$t$$$ test cases follow. standard input. 2), Alternate Solution for 1787-G (Colorful Tree Again), Difficulties Faced in ICPC Colombia: Balancing National and International Competitions, I've solved all 800-1300 rated problems solvable with C++. Problems - Virtual Judge The first line contains a single integer $$$t$$$ ($$$1 \le t \le 10^4$$$). You can make hacks only if all . Connect and share knowledge within a single location that is structured and easy to search. It is supported only ICPC mode for virtual contests. Array with Odd Sum. Three Pairwise Maximums.cpp, codeforces 1385 B. Bear and Big Brother.cpp, codeforces 867 A. The first line of each test case contains a single integer $$$n$$$ ($$$1 \le n \le 2 \cdot 10^5$$$). The second line contains $$$n$$$ integers $$$a_1, a_2, \ldots, a_n$$$ ($$$1 \le a_i \le min(n, 100)$$$) elements of the array. Solve more problems and we will show you more here! How do I figure out what size drill bit I need to hang some ceiling hooks? The solution performs a series of exchange of data with the judge and at . 1 + Div. 2), Alternate Solution for 1787-G (Colorful Tree Again), Difficulties Faced in ICPC Colombia: Balancing National and International Competitions, I've solved all 800-1300 rated problems solvable with C++. Collecting Packages.cpp, codeforces 1294 E. Obtain a Permutation.cpp, codeforces 1295 A. For others, number of distinct substrings are (len (indexOfTheseStrings+LCP(stringi,stringi-1)) + 1). New Year and Naming.cpp, codeforces 1284 B. Adjacent Replacements.cpp, codeforces 1015 A. Zoning Restrictions Again.cpp, codeforces 1163 B2. For example, the following three arrays are unimodal: [5,7,11,11,2,1], [4,4,2], [7], but the following three are not unimodal: [5,5,6,6,1], [1,2,1,2], [4,5,5,6]. In the third example, the array elements can be rearranged as follows: $$$[4, 4, 2, 1, 1]$$$. The New Year Meeting Friends.cpp, codeforces 729 A. 2). In one step, the array a a is replaced with another array of length n n, in which each element is the greatest common divisor (GCD) of two neighboring elements (the element itself and its right neighbor; consider that the right neighbor of the (n 1) ( n 1) -th element is the 0 0 -th element). Restore the Permutation by Merger.cpp, codeforces 1388 B. Captain Flint and a Long Voyage,cpp, codeforces 1388 C. Uncle Bogdan and Country Happiness.cpp, codeforces 1388 D. Captain Flint and Treasure.cpp, codeforces 1391 C. Cyclic Permutations.cpp, codeforces 1392 B. Omkar and Infinity Clock.cpp, codeforces 1392 C. Omkar and Waterslide.cpp, codeforces 1393 A. Rainbow Dash, Fluttershy and Chess Coloring.cpp, codeforces 1393 B. Applejack and Storages.cpp, codeforces 1393 C. Pinkie Pie Eats Patty-cakes.cpp, codeforces 1399 D. Binary String To Subsequences.cpp, codeforces 1401 D. Maximum Distributed Tree.cpp, codeforces 177 A1. 1, Div. 2) (8VC Venture Cup 2017 - Final Round Div. The task is to maximize the AND of the resulting array. Interesting Array Problem. Problemset - Codeforces Maximum Sum of Digits.cpp, codeforces 1065 A. Vasya and Chocolate.cpp, codeforces 1074 A. Ehab Fails to Be Thanos.cpp, codeforces 1075 B. Vitaly has an array of n distinct integers. My codeforces handle-soumik9876. February 29, 2020 09:49. Create Codeforces 1408 B - Arrays Sum.cpp, Codeforces - Educational Codeforces Round 91 (Rated for Div. The first line contains an integer $$$t$$$ ($$$1 \le t \le 10^4$$$). Programming competitions and contests, programming community . If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. Otherwise, if you change $$$A_i$$$ to $$$A_i'$$$, then the new answer becomes $$$P_i \land A_i' \land S_i$$$, and this is maximized if $$$A_i' = P_i \land S_i$$$, for example. Term meaning multiple different layers across many eras? Increasing Subsequence (hard version).cpp, codeforces 1159 B. Problem 6: common subsequence (Polish Olympiad 2001 and Top Coder 2004) , requires to find longest common substring of three given strings . But i have an idea with Suffix array, don't think that will pass. but i need to submit that code :D iff u can please share ur idea :). Update flood-fill.cpp. Invitation to Codeforces Round 887 (Div. Whatever there are some very good problems discussed in the pdf , and I want to practice them,test them with my code. Letters Rearranging.cpp, codeforces 1093 C. Mishka and the Last Exam.cpp, codeforces 1095 B. This is the easy version of the problem. For a given array $$$a$$$, find the minimum number of steps after which all values $$$a_i$$$ become equal (that is, $$$a_0 = a_1 = \dots = a_{n - 1}$$$). Physical interpretation of the inner product between two quantum states. P.S: I'm not sure but I remember to saw problem 8 and 9, I can't remember if the problems were exactly or a little bit different but they can be found (I think). Problem - 1852D - Codeforces Numbers on the Chessboard.cpp, codeforces 1029 B. If you are just learnt suffix array, try those problems discussed in this article. Work fast with our official CLI. Learn more about the CLI. #include ","","using namespace std;","","int main()","{"," int n;"," cin >> n;",""," vector arr(n);"," for (int i = 0; i n; ++i)"," {"," cin >> arr[i];"," }",""," for . April 6, 2020 15:05. Multiply by 2, divide by 6.cpp, codeforces 1374 D. Zero Remainder Array.cpp, codeforces 1374 E1. soumik9876/Codeforces-solutions: Some codeforces problem solutions - GitHub Codeforces Round #379 (Div. In the second case, we can perform 2 2 operations to make the array not sorted: Pick i = 3 i = 3. Maximum Subarray - LeetCode Temporarily unavailable.cpp, codeforces 1282 B1. View submission Copy to Clipboard. Happy Birthday, Polycarp.cpp, codeforces 1277 C. As Simple as One and Two.cpp, codeforces 1281 B. Azamon Web Services.cpp, codeforces 1282 A. Constraints: 2 N 2 * 10^5 0 A[i] 2 * 10^9, To anyone who is interested in seeing the problem : Problem Link. Each problem identifier is specified between round brackets. Why can't sunlight reach the very deep parts of an ocean? (A modification to) Jon Prez Laraudogoitas "Beautiful Supertask" time-translation invariance holds but energy conservation fails? The Good Array . oracle (, B1. In one move, you can take any two elements of the array and swap them (these elements are not necessarily adjacent). Codeforces 1409 D. Decrease the Sum of Digits.cpp. Finished. Mahmoud and Ehab and the even-odd game.cpp, codeforces 976 A. Login; Register; User Editorials: Search Friends: Upcoming Contests: Search Problems: Leaderboard: Trending Problems: Submission Filters: Feature Updates: Job Profile. It is allowed that both of this blocks are absent. The (n + 2) ( n + 2) -th element of the array b b was written some number x x ( 1 x 109 1 x 10 9 ), i.e. Yet Another Crosses Problem.cpp, codeforces 1196 A. The problem statement has recently been changed. Dont know where to find the orginal problem and submit . Airline refuses to issue proper receipt. I can do it in O(n^2) but it's obviously not optimal. If the original array $$$a$$$ consists of identical elements then consider the number of steps is equal to $$$0$$$. Problem - 1446D1 - Codeforces Regular Bracket Sequence.cpp, codeforces 1132 C. Painting the Fence.cpp, codeforces 1133 A. Virtual contest is a way to take part in past contest, as close as possible to participation on time. Minimum Binary Number.cpp, codeforces 989 B. Are you sure you want to create this branch? Vitaly wants to divide this array into three non-empty sets so as the following conditions hold: The product of all numbers in the first set is less than zero ( < 0). By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. For each suffix, number of distinct substrings equals to cnt[i]=n-sa[i]-lcp[i]. standard output. To do this, she took an array a a consisting of n n non-negative integers and applied the following operation to all its elements at the same time: ai = ai a(i+1) mod n a i = a i a ( i + 1) mod n. Here x mod y x mod y denotes the remainder of dividing x x by y y. Increase and Decrease.cpp, codeforces 266 B. Queue at the School.cpp, codeforces 368 B. Sereja and Suffixes.cpp, codeforces 448 D. Multiplication Table.cpp, codeforces 454 B. Word Capitalization2 2 Problem 2B. The first block (increasing) and the last block (decreasing) may be absent. Let's call a pair of indices $$$i$$$, $$$j$$$ good if $$$1 \le i < j \le n$$$ and $$$\gcd(a_i, 2a_j) > 1$$$ (where $$$\gcd(x, y)$$$ is the greatest common divisor of $$$x$$$ and $$$y$$$). For each test case, output a single integer the maximum number of good index pairs if you can reorder the array $$$a$$$ in an arbitrary way. Let $$$P_i = A_1 \land \ldots \land A_{i - 1}$$$ and $$$S_i = A_{i + 1} \land \ldots \land A_n$$$, where the bitwise and of the empty array is $$$2^{31} - 1$$$. Rooms and Staircases.cpp, codeforces 1245 A. Problem - 1463B - Codeforces New Building for SIS.cpp, codeforces 102191 C. Seating Arrangement.cpp, codeforces 1023 A. cry Invitation to Codeforces Round 887 (Div. Good Matrix Elements.cpp, codeforces 221B - Little Elephant and Numbers.cpp, codeforces 228 A. it is strictly increasing in the beginning; Asking for help, clarification, or responding to other answers. @GarethRees It looks much better than method 2, why is it slower? Between the Offices.cpp, codeforces 869 B. I am getting WA again and again, I am not even Binary Searching, complexity is O(N) per query. The second row of each test case contains $$$n+2$$$ integers $$$b_1, b_2, \ldots, b_{n+2}$$$ ($$$1 \le b_i \le 10^9$$$). Virtual contest is a way to take part in past contest, as close as possible to participation on time. In other words, you are looking for a subarray such that if the most frequent value occurs $$$f$$$ times in this subarray, then at least $$$2$$$ different values should occur exactly $$$f$$$ times. It only takes a minute to sign up. Can you solve this real interview question? You are given an array $$$[a_1, a_2, \dots, a_n]$$$. Solve more problems and we will show you more here! Think about binary representation of numbers, here point to note is the bit positions such that all the numbers have 1 at that position except 1 number that has a 0.Such bit positions can be changed to have all 1 by adding pow(2,i) (where i is the bit position) to that number which currently has a 0 at that location , this will increase the overall AND. I owe you big time for this resource. It is supported only ICPC mode for virtual contests. Problem - 1853A - Codeforces Maximum Subarray - Given an integer array nums, find the subarray with the largest sum, and return its sum. 2) A. Anton and Danik (734A) B. Anton and Digits (734B) Balanced Rating Changes.cpp, codeforces 1238 C. Standard Free2play.cpp, codeforces 124 A. Programming competitions and contests, programming community . jd_sal's blog. You signed in with another tab or window. Find the maximum number of good index pairs if you can reorder the array a in an arbitrary way. Generate superposition of two basis states (, B1. Login; Register; User Editorials: Search Friends: Upcoming Contests: Search Problems: Leaderboard: Trending Problems . More formally, an array is good if for all i i ( 0 i n 1 . output. Then we can calculate the prefix sums for cnt array and answer the queries using binary search or two pointers. 3) Interesting Facts, Codeforces Round 887 (Div 1, Div 2) Tutorial, Educational Codeforces Round 151 Editorial. All Copyright Reserved 2010-2023 Xu Han Server Time: Xu Han Server Time: It is supported only ICPC mode for virtual contests. You are given an array a consisting of n integers. 3) Interesting Facts, Codeforces Round 887 (Div 1, Div 2) Tutorial, Educational Codeforces Round 151 Editorial. A tag already exists with the provided branch name. Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. The problem statement has recently been changed. Virtual contest is a way to take part in past contest, as close as possible to participation on time. Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. I solved this using two methods in python3.5. 0. build suffix array (sa) and lcp array (lcp). Two Rival Students.cpp, codeforces 1257 C. Dominated Subarray.cpp, codeforces 1257 D. Yet Another Monster Killing Problem.cpp, codeforces 1263 C. Everyone is a Winner.cpp, codeforces 1265 C. Beautiful Regional Contest.cpp, codeforces 1265 D. Beautiful Sequence.cpp, codeforces 1269 C. Long Beautiful Integer.cpp, codeforces 1270 B Interesting Subarray.cpp, codeforces 1272 C. Yet Another Broken Keyboard.cpp, codeforces 1277 A. Applecrest Farm Orchards,
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