For me, I think better recursively than iteratively. The order you need to take the stones is fixed. The process consists of moves. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. They have an array of positive integers a a of size n n. Before starting the game, Alice chooses an integer k 0 k 0. [Screencast] Somehow getting top 5 in Codeforces Round 888 (Div. CodeForces - 347C Alice and Bob. Can you explain exactly why you think so ? Hi! 3) Interesting Facts, Codeforces, Alternate Solution for 1787-G (Colorful Tree Again). How many bars each of the players will consume? Then you pick which situation is the one that is better for the first player, because they are going to choose which one the game starts. Thanks for you response. Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. Explanation: There is no way for Alice to win the game. Alice and Bob || Codeforces - YouTube After you pick a stone with value 2, you cant pick a stone with value 1, so you will have to pick a stone with value 2, and then you will have to pick a stone with value 1, and them two, and so it goes. 1 + Div. Virtual contest is a way to take part in past contest, as close as possible to participation on time. 3)!!! The first line contains an integer $$$n$$$ ($$$1 \le n \le 1000$$$) the number of candies. The rest of the vertices will be in one connected component connected to the parent of $$$u$$$. CodeForces - 1055B Alice and Hairdresser(+) - Assume both plays the game optimally. [Screencast] Somehow getting top 5 in Codeforces Round 888 (Div. If both players start to eat the same bar simultaneously, Bob leaves it to Alice as a true gentleman. If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. Graph nodes index starts from 1. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"1-2-K Game.cpp","path":"1-2-K Game.cpp","contentType":"file"},{"name":"1029B - Creating the . 2). 2) Editorial. GitHub: Let's build from here GitHub Alice and Bob play an interesting and tasty game: they eat candy. From now on when i talk about value im talking about the value mod 3. Codeforces Round #879 (Div. 2, based on All-Russian olympiad in the 2) Editorial. The function getDivideIndexRec(int[] arr, int i, int j, boolean isLeft) is the heart of the solution. And now they are ready to start a new game. Thats the link to my submission: http://codeforces.ru/contest/6/submission/5291991. Alice and Bob - Codeforces 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. move 1: Alice eats one candy of size $$$3$$$ and the sequence of candies becomes $$$[1,4,1,5,9,2,6,5,3,5]$$$. Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. It has created a lot of desperate people who do not actually care about competitive programming but need to be good anyway. CodeForces - 347C Alice and Bob - Programmer Sought It is a kind of greedy algorithm I think. The size of the $$$i$$$-th candy is $$$a_i$$$. When the player consumes a chocolate bar, he immediately starts with another. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. 2). https://leetcode.com/problems/stone-game-ix/. If the number of stones with value 0 is odd, then the loser is the opposite (because of the third observation). Faisal's Blog (Algorithm & Datastructure Problems), http://codeforces.com/problemset/problem/6/C, Learn more about bidirectional Unicode characters. Codeforces Round #640 (Div. 4) problem: 1352D Alice, Bob and Candies The only programming contests Web 2.0 platform, Educational Codeforces Round 152 (Rated for Div. Counters are pointers to next bar which will be eaten by any of players. Codeforces Clean Code Champions: Nominate Your Favorites! {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"A and B and Compilation Errors.cpp","path":"A and B and Compilation Errors.cpp","contentType . Once this number becomes strictly greater than the total size of candies eaten by the other player on their previous move, the current player stops eating and the move ends. The They get a set of n distinct integers. And now they are ready to start a new game. 2) Editorial. 3)!!! The rules are as follows. 1, Div. The rules are as follows. Alice, Bob, Two Teams CodeForces - 632B - Programmer Sought Problem Statement: It is guaranteed that the sum of the values of $$$n$$$ for all sets of input data in a test does not exceed $$$2\cdot10^5$$$. Alice and Bob play games. Second observation: you can never start with a stone that has value 0, so you will have to pick either one with value 1 or 2. Determine the maximum score of Alice and Bob respectively. jli505 . I am not able to get the discussions /editorial , this problem is very tough . Codeforces separates its users into 4 divisions by their rating: For Division 1: 1900rating For Division 2: 1600rating1899 For Division 3: 1400rating1599 For Division 4: rating1399 Given a rating, print in which division the rating belongs. move 5: Bob ate $$$8$$$ on the previous move, which means Alice must eat $$$9$$$ or more. 1 + Div. For each set of input data print three integers the number of moves in the game and the required values $$$a$$$ and $$$b$$$. Build the DFS tree (shamelessly linking to my own blog, oh no) of the graph. This problem can be easily solved using properties of deque,below is the implementation of the same::: The only programming contests Web 2.0 platform, Educational Codeforces Round 152 (Rated for Div. Hence the solution. In particular, what matters is the ammount of each stone on each mod value. In the following, I'll denote as $$$\mathrm{sw}[u]$$$ the sweetness value of $$$u$$$. Alice makes the first move. So Alice and Bob have invented a new game to play. For each chocololate bar the time, needed for the player to consume it, is known (Alice and Bob eat them with equal speed). I am not able to get the discussions /editorial , this problem is very tough . They have placed n chocolate bars in a line. either Alice or Bob (the player whose turn is the current) can choose two distinct integers x and y from the set, such that the set doesn't contain their absolute difference . So, obviously at the start iteration isLeft will be false. They have placed n chocolate bars in a line. Raw Blame. 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. The order you need to take the stones is fixed. It is not allowed to eat two chocolate bars at the same time, to leave the bar unfinished and to make pauses. Alice will eat candy from left to right, and Bob from right to left. It is necessary to solve the questions while watching videos, nados.pepcoding.com. During a move, the player eats one or more sweets from her/his side (Alice eats from the left, Bob from the right). Please Help !!!!!!!!!! How many bars each of the players will consume? The process consists of moves. I am not able to get the discussions /editorial , this problem is very tough . Each of them have Ti available hours each day with i = A;B. grote 5371 tail light wiring diagram. The order you need to take the stones is fixed. A tag already exists with the provided branch name. Solving CodeForces Problem E(Div.3) | by TheCuriousProgrammer | Medium Can you please elaborate further because my dfs gave me TLE. The game lasts for k k stages, the stages are numbered from 1 1 to k k. During the i i -th stage, Alice must remove an element from the array that is less than or equal to . Virtual contest is a way to take part in past contest, as close as possible to participation on time. Can someone help me in solving this game theory problem? The problem statement has recently been changed. AliceBob : Codeforces Problem 6C | Faisal's Blog (Algorithm Problem - 1352D - Codeforces Educational Codeforces Round 152 (Rated for Div. . Print two numbers a and b, where a is the amount of bars consumed by Alice, and b is the amount of bars consumed by Bob. Blog Teams Submissions Contests case3's blog Alice and Bob plays break the node By case3 , history , 2 years ago , Hello everyone. 1, Div. Alice and Bob - Codeforces Suppose you choose number 5, the opponent chooses 3 and wins the game, making the total 5+3=8 . 2) Editorial. 2). Input: number of test cases then n, m and then sweetness of each node and then the edges. They have placed n chocolate bars in a line. Alice and Bob are playing a game. 3)!!! Please Help !!!!!!!!!! [Screencast] Somehow getting top 5 in Codeforces Round 888 (Div. The rules are as follows. 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). 4) D. Alice, Bob and Candies For every child $$$v$$$ of $$$u$$$ such that there is no back-edge from a descendant of $$$v$$$ to a proper ancestor of $$$u$$$, there will be a component with total sweetness value $$$\mathrm{sub}[v]$$$. 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. Solving CodeForces Problem E (Div.3) Alice and Bob have decided to play the game "Rock, Paper, Scissors". If its odd, then you will be able to skip the turn if it favors you, even if the opponent tries to fight against that. To adjust the time limit constraint, a solution execution time will be multiplied by 2. If its odd, then you will be able to skip the turn if it favors you, even if the opponent tries to fight against that. Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. 3)!!! The problem says, You are given a connected undirected graph. Alice and Bob plays break the node - Codeforces Codeforces. $$$a$$$ the total size of all sweets eaten by Alice during the game; $$$b$$$ the total size of all sweets eaten by Bob during the game. If the number of them is even, then nothing can be done because if you want to skip the turn the opponent can always skip back. If you've seen these problems, a virtual contest is not for you - solve these problems in the archive. These hiring challenges are really destroying competitive programming. 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). Problem - 346A - Codeforces E. Alice, Bob, Oranges and Apples Alice and Bob decided to eat some fruit. standard input output standard output There are n n candies in a row, they are numbered from left to right from 1 1 to n n. The size of the i i -th candy is ai a i. Alice and Bob play an interesting and tasty game: they eat candy. Given Alice's initial split into two teams, help Bob determine an optimal strategy. expert, 1858) Contribution: 0 Friend of: 12 users Last visit: 18 months ago Registered: 4 years ago Blog entries (0) , comments Talks | Send message Oct 2019 Jan 2020 Apr 2020 Jul 2020 Oct 2020 Jan 2021 Apr 2021 Jul 2021 Oct 2021 1200 1400 1600 1900 Alice_and_Bob Space complexity could not be reduced because we need to store the whole array to process it from the end otherwise my solution would be O(1). Third observation: stones with value 0 essentially skip the turn. Good luck to all the participants! Codeforces Clean Code Champions: Nominate Your Favorites! Solution: test for picking a stone with value 1 first, then for picking a stone with value 2 first. The Story of a Tree | HackerRank The only programming contests Web 2.0 platform. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). Please Help !!!!!!!!!! Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. It has n nodes and m edges. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. It is so boring in the summer holiday, isn't it? So, please ask tomorrow. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. Second observation: you can never start with a stone that has value 0, so you will have to pick either one with value 1 or 2. Your email address will not be published. In every vertex $$$v$$$, store the total sweetness value of the subtree of that vertex, call that value $$$\mathrm{sub}[v]$$$. It is not allowed to eat two chocolate bars at the same time, to leave the bar unfinished and to make pauses. Before contest Codeforces Round 862 (Div. Third observation: stones with value 0 essentially skip the turn. There are $$$n$$$ candies in a row, they are numbered from left to right from $$$1$$$ to $$$n$$$. . Alice and Bob like games. For each chocololate bar the time, needed for the player to consume it, is known (Alice and Bob eat . In particular, what matters is the ammount of each stone on each mod value. 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). 1, Div. Go to file. The first line contains one integer n (1n105) the amount of bars on the table. 2). It is supported only ICPC mode for virtual contests. Third observation: stones with value 0 essentially skip the turn. How would you handle partial cases, say at a given moment Alice finishes hers when Bob is still eating. Alice eats three candies with the total size of $$$1+4+1=6$$$ and the sequence of candies becomes $$$[5,9,2,6,5,3]$$$. I participated in the lowe's coding round and there was this question I was not able to solve completely. 1 + Div. 1, Div. If you've seen these problems, a virtual contest is not for you - solve these problems in the archive. In other words, on a move, a player eats the smallest possible number of candies such that the sum of the sizes of candies eaten on this move is strictly greater than the sum of the sizes of candies that the other player ate on the previous move. Input: K = 7, N = 50 Output: Alice Your email address will not be published. , . Codeforces-346A-Alice and Bob (more phase loss) - Programmer Sought Where to Practice Topic wise for Competitive Programming ? If its odd, then you will be able to skip the turn if it favors you, even if the opponent tries to fight against that. 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. The only programming contests Web 2.0 platform, Educational Codeforces Round 152 (Rated for Div. There are n pieces, and the i -th piece has a strength pi. Then you pick which situation is the one that is better for the first player, because they are going to choose which one the game starts. I participated in the lowe's coding round and there was this question I was not able to solve completely. Please consume this content on nados.pepcoding.com for a richer experience. First observation: the values of the stones by themselves doesnt matter, what matters is their value mod 3. Alice and bob codeforces solution - qhw.crisavona.it Before you start working on your algorithm, I need you to consider this: Alice and Bob start consuming from opposite side of the array, not the same side. Bob will pick any connected component(containing all or some nodes), Alice will pick any remaining connected components if there are any. Problem - 1749c - Codeforces The problem statement has recently been changed. There are 2 players Alice and Bob, who are playing Rock, Paper and Scissors game. 2) Editorial. From now on when i talk about value im talking about the value mod 3. Codeforces Clean Code Champions: Nominate Your Favorites! Find the player who will win by choosing a number in range [1, K] with Title Alice and Bob are playing the game, giving you n numbers, the size of each number is a i a_i a i , And then Alice goes first, each step is to choose two numbers from the n numbers u u u v v v Do poor u v |u-v| u v , If this number does not exist then put u v |u-v| u v Fill in this sequence, otherwise the person loses. Input Alice and Bob - Codeforces 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). So Alice and Bob have invented a new game. move 2: Alice ate $$$3$$$ on the previous move, which means Bob must eat $$$4$$$ or more. Ive tried to implement my solution as I promised seems, the task is even bit simpler than I thought! 1 + Div. Solution: test for picking a stone with value 1 first, then for picking a stone with value 2 first. It is impossible, so Bob eats the two remaining candies and the game ends. This video is part of the series to impart industry-level web development and programming skills in the community. Here, arr is the given array i is the index of the chocolate Alice is consuming, j is the index of the chocolate Bob is consuming, and isLeft determines from which side the function is getting called in the next iteration. D - Alice, Bob and Candies CodeForces - 1352D - Alice and Bob CodeForces - 347C - Programmer Sought GitHub: Let's build from here GitHub Alice_and_Bob - Codeforces Although, in terms of time and space complexity, it would be the same. The rules are as follows. Pay attention Solution Idea: Where to Practice Topic wise for Competitive Programming ? Solution: test for picking a stone with value 1 first, then for picking a stone with value 2 first. So, they have to stick to something similar to competitive programming. After you pick a stone with value 2, you cant pick a stone with value 1, so you will have to pick a stone with value 2, and then you will have to pick a stone with value 1, and them two, and so it goes. Required fields are marked *. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. Please Help !!!!!!!!!! When Alice picks any number from 1 to 7 (inclusive both), the opponent wins the game in the next turn by making the total 8 . [Screencast] Somehow getting top 5 in Codeforces Round 888 (Div. The second line contains a sequence of integers $$$a_1, a_2, \dots, a_n$$$ ($$$1 \le a_i \le 1000$$$) the sizes of candies in the order they are arranged from left to right. This in turn has increased the number of people with a shitty attitude, including but not limited to cheaters. The following are descriptions of the $$$t$$$ test cases. It is necessary to solve the questions while watching videos, nados.pepcoding.com enables that.NADOS also enables doubt support, career opportunities and contests besides free of charge content for learning. First observation: the values of the stones by themselves doesnt matter, what matters is their value mod 3. It is supported only ICPC mode for virtual contests. The only programming contests Web 2.0 platform. Also I maintain time counters for both of them, to determine whose time is to eat chocolate. The game ends if all the candies are eaten. This Sunday will take place All-Russian olympiad for students of 5-8 grades, in the name of Keldysh. So Alice and Bob have invented a new game to play. GitHub: Let's build from here GitHub Alice, Bob, Two Teams---CodeForces-632B (suffix) - Programmer The game ends if all the candies are eaten. move 6 (the last): Alice ate $$$14$$$ on the previous move, which means Bob must eat $$$15$$$ or more. Please Help !!!!!!!!!! # include <stdio.h>. Alice and Bob like games. For example, if $$$n=11$$$ and $$$a=[3,1,4,1,5,9,2,6,5,3,5]$$$, then: Print the number of moves in the game and two numbers: The first line contains an integer $$$t$$$ ($$$1 \le t \le 5000$$$) the number of test cases in the input. Codeforces-B-C-D-Problem-Solutions/6C - Alice, Bob and - GitHub https://leetcode.com/problems/stone-game-ix/.
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