Problem - 1749c - Codeforces 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 . CodeForces - 347C Alice and Bob - Programmer Sought Please Help !!!!!!!!!! Alice will eat candy from left to right, and Bob from right to left. I participated in the lowe's coding round and there was this question I was not able to solve completely. AliceBob : Codeforces Problem 6C. Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. First, they get a set of n distinct integers. Your email address will not be published. The order you need to take the stones is fixed. [Screencast] Somehow getting top 5 in Codeforces Round 888 (Div. Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. The only programming contests Web 2.0 platform. Bob will pick any connected component(containing all or some nodes), Alice will pick any remaining connected components if there are any. Solving CodeForces Problem E (Div.3) Alice and Bob have decided to play the game "Rock, Paper, Scissors". Can someone help me in solving this game theory problem? Solution: test for picking a stone with value 1 first, then for picking a stone with value 2 first. Problem - 1352D - Codeforces If the number of stones with value 0 is odd, then the loser is the opposite (because of the third observation). Also I maintain time counters for both of them, to determine whose time is to eat chocolate. For each set of input data print three integers the number of moves in the game and the required values $$$a$$$ and $$$b$$$. 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. If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. C. Number Game. They have placed n chocolate bars in a line. Alice eats two candies with the total size of $$$5+9=14$$$ and the sequence of candies becomes $$$[2,6]$$$. https://leetcode.com/problems/stone-game-ix/. 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. 3)!!! 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-B-C-D-Problem-Solutions/6C - Alice, Bob and - GitHub From now on when i talk about value im talking about the value mod 3. Alice and Bob - Codeforces Alice, Bob and Chocolate - CodeForces 6C - Virtual Judge Time limit 2000 ms Mem limit 65536 kB Source Codeforces Beta Round 6 (Div. The order you need to take the stones is fixed. Alice and Bob play games. CodeForces - 1055B Alice and Hairdresser(+) - 2). 42 lines (35 sloc) 1020 Bytes. Counters are pointers to next bar which will be eaten by any of players. Programming competitions and contests, programming community. I am not able to get the discussions /editorial , this problem is very tough . It is supported only ICPC mode for virtual contests. I deleted all nodes and then computed cost every time. I participated in the lowe's coding round and there was this question I was not able to solve completely. How many bars each of the players will consume? Determine the maximum score of Alice and Bob respectively. Alice and Bob || Codeforces - YouTube {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"1-2-K Game.cpp","path":"1-2-K Game.cpp","contentType":"file"},{"name":"1029B - Creating the . 2). {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"A and B and Compilation Errors.cpp","path":"A and B and Compilation Errors.cpp","contentType . If the number of stones with value 0 is odd, then the loser is the opposite (because of the third observation). For me, I think better recursively than iteratively. D - Alice, Bob and Candies CodeForces - 1352D - First observation: the values of the stones by themselves doesnt matter, what matters is their value mod 3. . The rules are as follows. I do agree, these type of hirings have cultivated the cheater culture. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. CodeForces/C Programs/C Programs - 7/Alice_and_Bob.c. Click on the graph to enable the zoom feature. Please Help !!!!!!!!!! "/> art malik true lies. For each chocololate bar the time, needed for the player to consume it, is known (Alice and Bob eat them with equal speed). From now on when i talk about value im talking about the value mod 3. Problem Statement: Both of them want to maximize their score by collecting maximum possible sweetness. Codeforces Clean Code Champions: Nominate Your Favorites! # include <stdio.h>. During the first move, she will eat $$$1$$$ candy (its size is $$$a_1$$$). 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. The game ends if all the candies are eaten. 1 + Div. The first line contains one integer n (1n105) the amount of bars on the table. The first line contains an integer $$$n$$$ ($$$1 \le n \le 1000$$$) the number of candies. E. Alice, Bob, Oranges and Apples Alice and Bob decided to eat some fruit. Suppose you choose number 5, the opponent chooses 3 and wins the game, making the total 5+3=8 . Problem Link : https://leetcode.com/problems/stone-game-ix/ -12 ayush29azad 21 month (s) ago 1 Comments (1) Write comment? You will keep alternating between them after that, and the loser is the one who runs out of stones of the type he wants that turn (you also need to think of the scenario where all of the stones run out, which is really annoying). The package for this problem was not updated by the problem writer or Codeforces administration after we've upgraded the judging servers. Your email address will not be published. How to solve this problem? I did brute force and passed some test cases though. $$$a$$$ 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. Each test case consists of two lines. CodeForces - 1055B Alice and Hairdresser (+) : : Ailce nai l Ailce (1s) : . Alice, Bob and Chocolate - CodeForces 6C - Virtual Judge 1, Div. So Alice and Bob have invented a new game to play. Hello everyone. https://leetcode.com/problems/stone-game-ix/. GitHub: Let's build from here GitHub Alice starts to eat chocolate bars one by one from left to right, and Bob from right to left. 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. Codeforces Clean Code Champions: Nominate Your Favorites! Bob eats one candy of size $$$5$$$ and the sequence of candies becomes $$$[1,4,1,5,9,2,6,5,3]$$$. The only programming contests Web 2.0 platform, Educational Codeforces Round 152 (Rated for Div. Before contest Codeforces Round 862 (Div. 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. The way to split up game pieces is split into several steps: First, Alice will split the pieces into two different groups A and B. The function getDivideIndexRec(int[] arr, int i, int j, boolean isLeft) is the heart of the solution. These hiring challenges are really destroying competitive programming. For each chocololate bar the time, needed for the player to consume it, is known (Alice and Bob eat them with equal speed). 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. Where to Practice Topic wise for Competitive Programming ? Thanks for the comment. You will keep alternating between them after that, and the loser is the one who runs out of stones of the type he wants that turn (you also need to think of the scenario where all of the stones run out, which is really annoying). Please Help !!!!!!!!!! In particular, what matters is the ammount of each stone on each mod value. Each node has some sweetness value that will be given to us. Where to Practice Topic wise for Competitive Programming ? 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). I am not able to get the discussions /editorial , this problem is very tough . 1 + Div. Input Codeforces Round #640 (Div. 4) problem: 1352D Alice, Bob and Candies Good luck to all the participants! [Screencast] Somehow getting top 5 in Codeforces Round 888 (Div. They have placed n chocolate bars in a line. Where to Practice Topic wise for Competitive Programming ? 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. 2) Editorial. 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 . Codeforces Clean Code Champions: Nominate Your Favorites! 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 For each chocololate bar the time, needed for the player to consume it, is known (Alice and Bob eat . CodeForces/Alice_and_Bob.c at master - GitHub Codeforces Clean Code Champions: Nominate Your Favorites! So, they have to stick to something similar to competitive programming. Go to file. The problem statement has recently been changed. The strength of a player is then the sum of strengths of the pieces in the group. Can someone help me in solving this game theory problem? 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. Alice and Bob are playing a game. Codeforces Clean Code Champions: Nominate Your Favorites! Alice can pick rock 'a' times, scissors 'b' times and paper 'c' times. First observation: the values of the stones by themselves doesnt matter, what matters is their value mod 3. Solving CodeForces Problem E(Div.3) | by TheCuriousProgrammer | Medium Alice will get all the pieces marked A and Bob will get all the pieces marked B. move 4: Alice ate $$$6$$$ on the previous move, which means Bob must eat $$$7$$$ or more. Bob eats two candies with the total size of $$$3+5=8$$$ and the sequence of candies becomes $$$[5,9,2,6]$$$. Required fields are marked *. From now on when i talk about value im talking about the value mod 3. 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. The process consists of moves. I did this with DFS and max heap. . 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 . Virtual contest is a way to take part in past contest, as close as possible to participation on time. For each chocololate bar the time, needed for the player to consume it, is known (Alice and Bob eat them with equal speed). The order you need to take the stones is fixed. isLeft also gives priority to Alice over Bob if both attampt to eat the same chocolate. Assume both plays the game optimally. 2). Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. AliceBob : Codeforces Problem 6C | Faisal's Blog (Algorithm Thats the link to my submission: http://codeforces.ru/contest/6/submission/5291991. 2) flamestorm April Fools Day Contest 2023 . 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. Can you please elaborate why you think so? So Alice and Bob have invented a new game to play. We have found the sizes of all these components, so we can calculate the value of the largest one, give it to Bob and give all other vertices to Alice. In particular, what matters is the ammount of each stone on each mod value. They are not trying to minimize each other' score. The order you need to take the stones is fixed. To adjust the time limit constraint, a solution execution time will be multiplied by 2. You will keep alternating between them after that, and the loser is the one who runs out of stones of the type he wants that turn (you also need to think of the scenario where all of the stones run out, which is really annoying). The game ends if all the candies are eaten. Third observation: stones with value 0 essentially skip the turn. Solution Idea: I am not able to get the discussions /editorial , this problem is very tough . 1, Div. Where to Practice Topic wise for Competitive Programming ? If you need more clearification feel free to ask in the comment. System Crawler 2023-05-16 rickwang 2021-10-11 gonghw 2021-10-08 LBG2019401234 2021-02-23 It has created a lot of desperate people who do not actually care about competitive programming but need to be good anyway. 2) Editorial. Yes, your solution will work (not exactly how you have described, but there is definitely an intuitive iterative implementation). Yes, complexity is the same. [Screencast] Somehow getting top 5 in Codeforces Round 888 (Div. The problem statement has recently been changed. https://leetcode.com/problems/stone-game-ix/. 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). Third observation: stones with value 0 essentially skip the turn. move 6 (the last): Alice ate $$$14$$$ on the previous move, which means Bob must eat $$$15$$$ or more. Alice will eat candy from left to right, and Bob from right to left. Please consume this content on nados.pepcoding.com for a richer experience. [Screencast] Somehow getting top 5 in Codeforces Round 888 (Div. Alice moves first and she may break a node. 2). 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Well, to be honest it is not clear why the problem is not solved simply by maintaining two counters for time and two for bars and feeding the chocolate to the player who have smaller current counter of time Hm-m-m Ill try . There are $$$n$$$ candies in a row, they are numbered from left to right from $$$1$$$ to $$$n$$$. Alice and Bob like games. Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. Alice and Bob play an interesting and tasty game: they eat candy. During each move, 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 . 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. codeforces / 6 / C / alice-bob-and-chocolate. Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. 1, Div. GitHub: Let's build from here GitHub Alice and Bob like games. 2) Editorial. You will keep alternating between them after that, and the loser is the one who runs out of stones of the type he wants that turn (you also need to think of the scenario where all of the stones run out, which is really annoying). Brute force. When the player consumes a chocolate bar, he immediately starts with another. Round 1 as well? Where to Practice Topic wise for Competitive Programming ? Alice and Bob like games. Alice_and_Bob - Codeforces Submissions Expert Alice_and_Bob Contest rating: 1724 (max. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. Calculate these scores for every choice of $$$u$$$. [Screencast] Somehow getting top 5 in Codeforces Round 888 (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. So Alice and Bob have invented a new game to play. Alice eats three candies with the total size of $$$1+4+1=6$$$ and the sequence of candies becomes $$$[5,9,2,6,5,3]$$$. Alice starts to eat chocolate bars one by one from left to right, and Bob from right to left. In particular, what matters is the ammount of each stone on each mod value. 1, Div. , . Cuz, the companies can't interview all the candidates who apply for a particular job profile, as there are too many of them. Blog Teams Submissions Contests Ambuj123's blog Codeforces Round #640 (Div. I am not able to get the discussions /editorial , this problem is very tough . \r","First, they get a set of n distinct integers. . Alice, Bob, Two Teams---CodeForces-632B (suffix) - Programmer Although, in terms of time and space complexity, it would be the same. Codeforces Round #879 (Div. 2, based on All-Russian olympiad in the The game involves splitting up game pieces into two teams. Graph nodes index starts from 1. The game ends in three steps. The game ends if all the candies are eaten. Please Help !!!!!!!!!! Alice and bob codeforces solution - qhw.crisavona.it Codeforces. Alice starts to eat chocolate bars one by one from left to right, and Bob from right to left. 2). 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. First observation: the values of the stones by themselves doesnt matter, what matters is their value mod 3. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"100514Q - Peace of bzjd.cpp","path":"100514Q - Peace of bzjd.cpp","contentType":"file . Input: K = 7, N = 50 Output: Alice Where to Practice Topic wise for Competitive Programming ? 2) Editorial. First observation: the values of the stones by themselves doesnt matter, what matters is their value mod 3. Given the tree, Alice's guesses, and the value of for each game, find the probability that Alice will win the game and print it on a new line as a reduced fraction in the format p/q. Im sorry I do not know how to paste code here. 1 + Div. The rules are as follows. And now they are ready to start a new game. Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. Find the player who will win by choosing a number in range [1, K] with Alexdat2000 Codeforces Round #862 (Div. Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. Alice and Bob - Codeforces Can someone help me in solving this game theory problem? 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. In the following, I'll denote as $$$\mathrm{sw}[u]$$$ the sweetness value of $$$u$$$. If you've seen these problems, a virtual contest is not for you - solve these problems in the archive. 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. The only programming contests Web 2.0 platform, Educational Codeforces Round 152 (Rated for Div. 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). Return the maximum strength he can achieve. Codeforces Clean Code Champions: Nominate Your Favorites! It has n nodes and m edges. The problem says, You are given a connected undirected graph. Pep it up #pepcoding #code #coder #codinglife #programming #coding #java #freeresources #datastrucutres #pepcode #competitive #competitiveprogramming #softwareengineer #engineering #engineer Thus, we can check the scores of both players if Alice removes the vertex $$$u$$$ at first. Alice will eat candy from left to right, and Bob from right to left. . Alice and Bob plays break the node - Codeforces It is guaranteed that the sum of the values of $$$n$$$ for all sets of input data in a test does not exceed $$$2\cdot10^5$$$. I am not able to get the discussions /editorial , this problem is very tough . Let's consider removing some vertex $$$u$$$. The size of the $$$i$$$-th candy is $$$a_i$$$. Please Help !!!!!!!!!! If the number of stones with value 0 is odd, then the loser is the opposite (because of the third observation). Alice makes the first move. What is optimal way of doing this problem. If there are not enough candies to make a move this way, then the player eats up all the remaining candies and the game ends. 2) Editorial. PepCoding | Alice And Bob 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. 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. The second line contains a sequence t1,t2,,tn (1ti1000), where ti is the time (in seconds) needed to consume the i-th bar (in the order from left to right). The rules are as follows. Raw Blame. 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. 3) Interesting Facts, Alternate Solution for 1787-G (Colorful Tree Again). move 2: Alice ate $$$3$$$ on the previous move, which means Bob must eat $$$4$$$ or more. 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. https://leetcode.com/problems/stone-game-ix/. Alice and Bob CodeForces - 347C. Can someone help me in solving this game theory problem? 3)!!! Alice starts to eat chocolate bars one by one from left to right, and Bob from right to left. Hence the solution. This Sunday will take place All-Russian olympiad for students of 5-8 grades, in the name of Keldysh. Alice and Bob - Codeforces Alice and Bob CodeForces - 347C - Programmer Sought It is impossible, so Bob eats the two remaining candies and the game ends. In the kitchen they found a large bag of oranges and apples. 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. It is so boring in the summer holiday, isn't it? Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. Can you please elaborate further because my dfs gave me TLE. Faisal's Blog (Algorithm & Datastructure Problems), http://codeforces.com/problemset/problem/6/C, Learn more about bidirectional Unicode characters. 3)!!! Hi! The rest of the vertices will be in one connected component connected to the parent of $$$u$$$. If both players start to eat the same bar simultaneously, Bob leaves it to Alice as a true gentleman. There are 2 players Alice and Bob, who are playing Rock, Paper and Scissors game. Alice and Bob are playing a game. The process consists of moves. Problem - 346A - Codeforces move 5: Bob ate $$$8$$$ on the previous move, which means Alice must eat $$$9$$$ or more. 1, Div. Example 2: Input: n = 3 Output: false Explanation: Alice chooses 1, Bob chooses 1, and Alice has no more moves. On each move, a player counts the total size of candies eaten during the current move. Explanation: There is no way for Alice to win the game. The only programming contests Web 2.0 platform, Educational Codeforces Round 152 (Rated for Div. 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). Virtual contest is a way to take part in past contest, as close as possible to participation on time. So, obviously at the start iteration isLeft will be false. Alice, Bob, Two Teams CodeForces - 632B - Programmer Sought Can you explain exactly why you think so ? 1, Div. For example, if your solution works for 400 ms on judging servers, then the value 800 ms will be displayed and used to determine the verdict. 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: number of test cases then n, m and then sweetness of each node and then the edges. Although, the problems are much easier and many times are slight variation of the standard algorithms. 2), [GYM] The 2023 Damascus University Collegiate Programming Contest, Codeforces Round 888 (Div. It is so boring in the summer holiday, isn't it? So Alice and Bob have invented a new game to play. It is not allowed to eat two chocolate bars at the same time, to leave the bar unfinished and to make pauses. There are n pieces, and the i -th piece has a strength pi. GitHub: Let's build from here GitHub Trying to solve an old Topcoder TCO06 problem, Invitation to Codeforces Round 887 (Div. When the player consumes a chocolate bar, he immediately starts with another. Codeforces Round 887 (Div 1, Div 2) Tutorial, [GYM] HIAST Collegiate Programming Contest 2023, Codeforces Round #884 (Div. GitHub: Let's build from here GitHub 4) problem: 1352D Alice, Bob and Candies. Lowe's hiring challenge is still ongoing till midnight today. During a move, the player eats one or more sweets from her/his side (Alice eats from the left, Bob from the right). 2) Editorial. 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. 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