Alice and bob problem 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 difference |x - y|. to Alice. For encoding text into numbers we apply the method from Chapter 12 . Can you solve this real interview question? Find Building Where Alice and Bob Can Meet - You are given a 0-indexed array heights of positive integers, where heights[i] represents the height of the ith building. e. " [8] Aug 2, 2017 · Facebook’s experiment prior to this showed that AI can pick up some human-like techniques: in the monitored times Alice and Bob tried to barter, they did things like pretending to be interested in an object, so they could feign making a sacrifice when giving it up, a paper by FAIR detailed previously. Mar 4, 2022 · Bob and Alice’s communicative behavior is one instance that can be seen as an example of the kind of computational creativity Canini proposes. If you've seen these problems, a virtual contest is not for you - solve these problems in the archive. Then Alice put the range $$$[2, 2]$$$ back to the set. in the $$$3$$$-rd move Alice again has to perform the $$$1$$$-st operation. However, this is done using an oblivious transfer, so that Alice can not obtain any information from Bob’s requests. Alice's mood becomes $$$0$$$. Bob gets to know which number Alice picked before deciding whether to add or subtract the number from the score, and Alice gets to know whether Bob added or subtracted the number for the previous turn before picking the number for the current turn (except on the first turn since there was no previous turn). Bob wants to keep ownership of all the fountains, but he can give one of them to Alice. In practice, Alice and Bob are communicating remotely (e. . You can output each letter in any case (lowercase or uppercase). Alice and Bob each created one problem for HackerRank. Alice plays first and they alternate. On each player's turn, that player makes a move consisting of removing any non-zero square number of stones in the pile. Alice and Bob make the values of p and g public Can you solve this real interview question? Alice and Bob Playing Flower Game - Alice and Bob are playing a turn-based game on a circular field surrounded by flowers. Given an array edges where edges[i] = [typei, ui, vi] represents a bidirectional Jul 31, 2024 · In this HackerRank Permutation game problem solution Alice and Bob play the following game: They choose a permutation of the numbers 1 to N. They have placed n chocolate bars in a line. Return "Alice" if Alice will win, "Bob" if Bob will win, or "Tie" if they will end the game with the same score. Alice and Bob take turns, with Alice starting first. in the $$$2$$$-nd move Bob reverses the string. They have a directed acyclic graph, such that each edge u !v satis es u < v. If there are , Alice will take , Bob will take one, and Alice will take the final one. Alice picked the range $$$[2, 3]$$$. To make the process of sharing the remaining fruit more fun, the friends decided to play a game. Problem Description: Alice and Bob each created one problem for HackerRank. During the first move, Alice chooses any element of the permutation and places the chip on that element. Can you solve this real interview question? Stone Game III - Alice and Bob continue their games with piles of stones. The ciphertext itself can safely be sent across an "unsafe" network (one that Eve is listening on), but the key cannot. Bob. This signals to Bob that Alice sees at most 12 trees. For each test case, output "Alice" if Alice wins, "Bob" if Bob wins, and "Draw" if neither player can secure a victory. Bob and Charlie can complete the same job in 4 hours. $$$^\dagger$$$ The $$$\operatorname{MEX}$$$ (minimum excludant) of an array of integers is defined as the smallest non-negative integer which does not occur in the array. It is supported only ICPC mode for virtual contests. In the fifth query, Alice and Bob are already in the same building. There are an even number of piles arranged in a row, and each pile has a positive integer number of stones piles[i]. (And Alice's number is not zero. In a turn, they can remove anyone remaining number from the permutation. In the first test case, Alice and Bob can each take one candy, then both will have a total weight of $$$1$$$. Alice and Bob take turns, with Alice going first. You are also given another array queries where queries[i] = [ai, bi Alice and Bob play an interesting and tasty game: they eat candy. The first is by Nov 24, 2023 · In the third query, Alice cannot meet Bob since Alice cannot move to any other building. Bob can remove either prime from the set, and then Alice can remove the remaining prime. Bob can not do any operation. Also, if a player cannot make a move, he/she loses the game. The game ends when the remaining numbers from an increasing sequence of 1 or more numbers. Thus, we print Alice on a new line. They came up with the following version. Initially, there is a number n on the chalkboard. Alice's mood becomes $$$4$$$. in the $$$1$$$-st move Alice has to perform the $$$1$$$-st operation, since the string is currently a palindrome. If two people (usually referred to in the cryptographic literature as Alice and Bob) wish to communicate securely, they need a way to exchange some information that will be known only to them. Alice and Bob have four distinct * Alice and Bob cannot remove pieces from the edge of the line. Alice and Bob make alternating moves: Alice makes the first move, then Bob makes the second move, then Alice makes the third move, and so on. You signed out in another tab or window. Alice wants to minimize the score. * Now Jun 14, 2022 · Alice starts the game first. So we have 1 win for Alice and 1 draw between the two. Alice has 4 sisters and 1 brother. in the $$$3$$$-rd move Alice again has to perform the $$$1$$$-st Alice wants to maximize the score while Bob wants to minimize it. The total score will be equal to $$$10 - 6 = 4$$$, and it's the minimum possible. The modern solution to this problem is public key cryptography. The flrst step is for Alice and Bob to agree on a large prime p and a nonzero integer g modulo p. Bob will do the same but with Alice's calculated value (A), and his secret number (b). In the first test case, an example of the game is shown below: Alice chooses to not swap wallets with Bob in step 1 of her move. Alice will eat candy from left to right, and Bob — from right to left. The incorrect measurements can be determined by Bob communicating over a public line what orientation he used and Alice confirming the correct measurements. Alice and Bob each have several boxes with heaps. Assuming Alice and Bob play optimally, return true if Alice wins, or return false if Bob wins. On each player's turn, that player makes a move consisting of: Choosing any x with 0 &lt; x &lt; n&nbsp; and n % x == 0. Alice and Bob take turns, with Alice Alice and Bob each created one problem for HackerRank. The rating for Alice’s challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob’s challenge is the triplet b = (b[0], b[1], b[2]). But Alice only sees 12, so Alice passes. Initially, there are n stones in a pile. Can you solve this real interview question? Stone Game IV - Alice and Bob take turns playing a game, with Alice starting first. In the kitchen they found a large bag of oranges and apples. In case one-element in array consider its value as the XOR of array. Bob's mood becomes $$$0$$$. Alice and Bob are playing a game on May 3, 2021 · Problem Statement Alice and Bob each created one problem for HackerRank. Then another $$$4$$$ jokes of the third type. The return array is [1, 1] with Alice’s score first and Bob’s second. Can you solve this real interview question? Divisor Game - Alice and Bob take turns playing a game, with Alice starting first. If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. Now there are two primes left, and . How long will the job take if Alice, Bob, and Charlie work together? Assume each person works at a constant rate, whether working alone or working with others. Given the value of N for each game, print the name of the game’s winner on a new line. The game proceeds as follows: 1. The rating for Alice's challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob's challenge is the triplet b = (b[0], b[1], b[2]). In the third example, Alice always shows paper and Bob always shows rock so Alice will win all three rounds anyway. Also, if a player cannot make a move, they lose the Aug 13, 2017 · Alice and Bob can complete a job in 2 hours. H: Alice wins with the score 2-0 (since in 100 tosses, Alice wins 99-0, 98-1, and so on, this margin of victory can easily be confused with the number of branches in which Alice wins). Given an array edges where edges[i] = [typei, ui, vi] represents a bidirectional You signed in with another tab or window. Alice and Bob are playing a game on a You signed in with another tab or window. * Replacing the number n on the chalkboard with n - x. Also, Alice's number is not twice Chris's. The bots’ ‘new langauge’ can be understood as the emergence of an unexpected form of sense out of the interaction between human and computational linguistic logics, which fulfills Turing’s Jul 31, 2024 · Finally, for elements 2, a[2] > b[2] so Alice receives a point. Alice starts to eat chocolate bars one by one from left to right, and Bob — from right to left. In the city in which Alice and Bob live, the first metro line is being built. Dive into the world of c challenges at CodeChef. Then $$$4$$$ jokes of the second type. Each plant needs a specific amount of water. Can you solve this real interview question? Stone Game - Alice and Bob play a game with piles of stones. AI's "Biggest Test" Is Turning Into Both Alice and Bob has mood $$$2$$$. You are also given another array queries where queries[i] = [ai, bi Jan 14, 2021 · Alice and Bob each created one problem for HackerRank. Alice and Bob want to know who is the richer without revealing how much they are actually worth. compareTriplets has the following parameter(s): int a[3]: Alice’s challenge rating; int b[3]: Bob’s challenge rating; Return Prepare for your technical interviews by solving questions that are asked in interviews of various companies. First, output the integer $$$\alpha$$$ — the maximum possible size of Alice's plot, if Bob does not give her any fountain (i. During a move, the player eats one or more sweets from her/his side (Alice eats from the left, Bob — from the right). Then Alice put the range $$$[2, 3]$$$ back to the set, which after this turn is the only range in the set. Alice and Bob are playing a game Alice and Bob each created one problem for HackerRank. Find game's final score if both players play optimally. In the second phase Alice chooses some nonempty subset of those heaps, and the regular Nim game starts on chosen heaps with Bob to move first. Complete the function compareTriplets in the editor below. How long will the job take if Alice, Bob, and Charlie work together? Assume each person works at a constant rate, whether This problem inspired real-world cryptographers to solve what is known as the key distribution problem. If there are , no matter what Alice does Oct 29, 2020 · The problem reads: “Alice and Bob can complete a job in two hours. You switched accounts on another tab or window. Bob and Weave. If there are , Alice will just remove all at once. When Alice finishes, Bob starts his journey. Alice and Bob decided to play a game where in every round Alice and Bob will do one move. over the internet) and have no prearranged way to Apr 8, 2024 · Flip a fair coin 100 times—it gives a sequence of heads (H) and tails (T). They start with a Aug 11, 2009 · The hat problems are extensions of the “king’s advisor” riddle, and some people end this riddle with a joke. Tomorrow, Alice will take $$$10$$$ and Bob will take $$$6$$$. There are several stones arranged in a row, and each stone has an associated value which is an integer given in the array stoneValue. They have a common string S of length N. Alice chooses the prime number and deletes the numbers and from the set, which becomes . Since Alice and Bob, both are playing to win the game and both are equally clever then "Alice has to think about Bob's move means options available for Bob once Alice is done with the move, What Bob will pick (Bob is equally clever and tries to leave Alice with minimum values to be chosen from) and then what Alice will choose. A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty. Alice immediately took an orange for herself, Bob took an apple. Disturbed by our noisy classical world, they run into errors: they “ decohere ”. Each player starts at some vertex. 53 The Millionaire’s Problem The Millionaire’s Problem, introduced by Andy Yao in 1982, began the study of privacy-preserving multiparty computation. Jul 31, 2017 · Bob: "I can can I I everything else. Alice takes the first turn. ” Bob: “That’s a stupid code, Alice. Mar 22, 2024 · I saw this interesting math problem from a coworker and decided to make a post discussing the computation. We are given , so . Bob already knows which heaps Alice picked. We define the rating for Alice's challenge to be the triplet , and the rating for Bob's challenge to be the triplet . Example 1: Input: colors = "AAABABB" Output: true Explanation: AAABABB -> AABABB Alice moves Problem. Feb 9, 2010 · If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. Programming competitions and contests, programming community. May 26, 2023 · Assume Alice and Bob play optimally. for the sequence THHHT Alice gets 2 points and Bob gets 1 point. In the second test case, any division will be unfair. In the second test case, Alice should buy the $$$1$$$-st, the $$$2$$$-nd and the $$$3$$$-rd item; then Bob takes the $$$1$$$-st item for free and pays for the $$$2$$$-nd and the $$$3$$$-rd item. Codeforces. The process consists of moves. On each player's turn, that player can take 1, 2, or 3 stones from the first remaining The problem facing Alice and Bob in Bennett, Brassard, and Roberts’ narrative is that a seemingly secure channel for communication is rendered “imperfect in various ways: transmission errors can occur, and partial information can leak to Eve, the eavesdropper, who also can modify the transmissions arbitrarily. In the first phase they pick exactly one heap from each box. 2. * Type 2: Can be traversed by Bob only. The total number of stones across all the piles is odd, so there are no ties. Since Alice and Bob are busy with preparing food to the New Year's Eve, they are asking you to find out the maximum number of ornaments that can be used in their beautiful Christmas Tree! It is guaranteed that it is possible to choose at least $$$6$$$ ($$$1+2+3=6$$$) ornaments. The only time Bob provides information to Alice about his input is when he requests the decryption key D1 ν 1(β) (·). People sending encoded messages have the same problem as Alice and Bob: in order to decode the message, the recipient must have the key, but the key itself must also be kept secret. Alice spends $$$0$$$ dollars while Bob spends $$$1$$$ dollar. After Alice's operation, $$$a=[0,1]$$$ and $$$mx=2$$$. T: It is a tie with the score 1-1 (HH for Alice and HT for Bob). In the fourth query, Alice and Bob can move to building 5 since heights[3] < heights[5] and heights[4] < heights[5]. He also performs the moves to reach $$$(2, m)$$$ and collects the coins in all cells that he visited, but Alice didn't. There are two ways for Bob to gather information about Alice’s input. The objective of the game is to end with the most stones. Suppose I send you the word ‘BEAN’ encoded Contest [Alice and Bob] in Virtual Judge Can you solve this real interview question? Watering Plants II - Alice and Bob want to water n plants in their garden. Alice obviously wins if there is one coin. There is $$$n\times n$$$ grid, initially empty. Alice and Bob Input le: standard input Output le: standard output Time limit: 1 second Memory limit: 512 mebibytes Alice and Bob will play a game by alternating turns with Alice going rst. , all fountains will remain on Bob's plot). For each chocololate bar the time, needed for the player to consume it, is known (Alice and Bob eat them with equal speed). For each HH in the sequence of flips, Alice gets a point; for each HT, Bob does, so e. Alice and Bob are playing a game. In the first test case, Alice can choose $$$i=1$$$ since $$$a_1=2 \ge mx=0$$$. Apr 10, 2017 · Alice and Bob each created one coding problem for HackerRank. Who is most likely to win? A. Jun 1, 2020 · Alice and Bob each created one problem for HackerRank. If Alice wins, print Alice; otherwise, print Bob. Bob: "Alice and Chris have different numbers. Alice's brother is part of the same family as Alice. B. appears that Alice and Bob face an impossible task. Who is most likely to win? Answer Alice has scored XX marks in her test and Bob has scored YY marks in the same test. They want to determine Alice has a birthday today, so she invited home her best friend Bob. Alice and Bob take turns playing a game, with Alice starting first. Each problem is reviewed and rated according to clarity, originality and difficulty. Today’s quantum computers don’t work. Day 4 If Alice saw 13 or 14 trees, then Alice could conclude there are 20 trees because Bob must see at least 6 trees. * If a player cannot make a move on their turn, that player loses and the other player wins. Alice picked the range $$$[2, 2]$$$. )" Jun 24, 2016 · An inaccurate measurement would not be a problem when Alice and Bob are communicating since they would discard the erroneous measurements that Bob made and only use the valid ones. Determine whether she is happy or not. Equally likely. They water the plants in the following way: * Alice Alice and Bob are playing a game with prime numbers. If there are 2 remaining, then Alice will take one and then Bob will take one, so Bob wins. HackerEarth is a global hub of 5M+ developers. The score of the game is the total number of coins Bob collects. And now they are ready to start a new game. If Alice is sending an encrypted message to Bob, this raises an interesting problem in encryption. Reload to refresh your session. ” Given the initial coordinates of Alice $$$(A_x,A_y)$$$ and initial coordinates of Bob $$$(B_x,B_y)$$$ and also the coordinates where N apples will fall, you need to calculate the minimum Manhattan distance covered in total by Alice and Bob together in order to catch all apples. If a person is in building i, they can move to any other building j if and only if i < j and heights[i] < heights[j]. Bob wants to maximize the score. Alice spends $$$2$$$ dollars while Bob spends $$$0 In the first test case, Alice should buy the $$$2$$$-nd item and sell it to Bob, so her profit is $$$2 - 1 = 1$$$. In the second test case, Bob can't change costs. Their basic building blocks, qubits, are too fragile. It was a brilliant insight of Di–e and Hellman that the di–culty of the discrete logarithm problem for F⁄ p provides a possible solution. In the best outcome, Alice will win one round if she shows paper and then scissors, and Bob shows rock and then scissors. Aug 10, 2022 · Problem statement: Alice and Bob play a game with piles of stones. " Alice: "Balls have zero to me to me to me to me to me to me to me to me to. Coin Flipping Problem Flip a fair coin 100 times—it gives a sequence of heads (H) and tails (T). * Type 3: Can be traversed by both Alice and Bob. The plants are arranged in a row and are labeled from 0 to n - 1 from left to right where the ith plant is located at x = i. Test your Learn C Programming knowledge with our Alice and Marks practice problem. For ans[i] != -1, It can be shown that ans[i] is the leftmost building May 8, 2023 · Alice: "Bob and Chris have different numbers" Bob (thinking): with that extra information I would also know my number if the sum or difference of the two numbers I see were equal to Chris's number. Function Description. Because Bob is left without a final move, Alice will always win. Alice and Bob use the ElGamal crypto system for their secure communication. The rules of the game are as follows: * Every round, first Alice will remove the minimum element from nums, and then Bob does the same. Jul 18, 2016 · Let's make Bob's job easier by restricting Alice's box-filling options as follows:-----The Restricted Alice-Bob Box Game Alice's Turing Machine (TM) puts natural numbers in the boxes 1,2,3,4, Alice's TM accepts an input tape of any finite length, such that Alice can design her TM to put any number in any box. 2 Alice and Bob take turns; Alice goes first. g. In this version, a king asks three sages, Alice, Bob and Carol to solve the hat riddle in an attempt to find the wisest sage in the land, who will then become his advisor. HH. Scroll down for a clue and further down for the Mar 18, 2024 · HH. The objectiv May 11, 2020 · As a last step Alice and Bob will take each other's calculated values and do the following: Alice will take Bob's calculated value (B) in the power of his secret number (a), and calculate this number's modulo to p and will call the result s (secret). Bob's mood becomes $$$4$$$. Alice is happy if she scored at least twice the marks of Bob’s score. Initially, there is a number n on the chalkboard. Alice and Bob have a watering can each, initially full. Jun 9, 2024 · Let's think through this problem step by step: 1. Now if Bob saw 6 or 7 trees, combined with the fact Alice sees at most 12 Alice and Bob decided to eat some fruit. Alice is worth Imillion dollars; Bob is worth Jmillion dollars. Now Bob needs to find a way to commute to the Alice's home. Sadly this is the end of Bob and Alice's story, as we learn that Facebook has ultimately decided to require that [7] Early on, Alice and Bob were starting to appear in other domains, such as in Manuel Blum's 1981 article, "Coin Flipping by Telephone: A Protocol for Solving Impossible Problems," which begins, "Alice and Bob want to flip a coin by telephone. C. Examples : Input : A[] = {3, 3, 2} Output : Winner = Bob Explanation : Alice can select 2 and remove it that make XOR of array equals to zero also if Alice choose 3 to remove than Bob can choose any of 2/3 and finally Alice have to make his steps. Mar 20, 2016 · This signals to Alice that Bob sees at least 6 trees. In the following we present all steps involved in Alice sending an encrypted message to Bob. Bob picked the number $$$3$$$. com Aug 2, 2017 · This is another demonstration of the principle behind the Bob and Alice exchanges. Alice wants to divide the field in such a way as to get as many cells as possible. On their turn, a player must move from the current vertex to a neighboring vertex that has not yet been visited by anyone. On their turn, the player has to choose several ( at least two ) equal integers on the board, wipe them and write a new integer which is equal to their sum. She will just take it and win. In the second example, Alice will not win any rounds if Bob shows the same things as Alice each round. Alice and Charlie can complete the same job in 3 hours. So the score will be equal to $$$(15 + 10) - 12 = 13$$$, since Alice will take $$$15$$$, Bob will take $$$12$$$, and Alice — $$$10$$$. In the third test case, both Alice and Bob can take two candies, one of weight $$$1$$$ and one of weight $$$2$$$. " That might look like gibberish or a string of typos, but researchers say it's See full list on usatoday. Example 1: Input: values = [1,2,3,7] Output Can you solve this real interview question? Find Building Where Alice and Bob Can Meet - You are given a 0-indexed array heights of positive integers, where heights[i] represents the height of the ith building. The game ends if all the candies are eaten. Can you solve this real interview question? Remove Max Number of Edges to Keep Graph Fully Traversable - Alice and Bob have an undirected graph of n nodes and three types of edges: * Type 1: Can be traversed by Alice only. Given a positive integer n, return true if Alice and Bob need to send secret messages to each other and are discussing ways to encode their messages: Alice: “Let’s just use a very simple code: We’ll assign ‘A’ the code word 1, ‘B’ will be 2, and so on down to ‘Z’ being assigned 26. Can you solve this real interview question? Minimum Number Game - You are given a 0-indexed integer array nums of even length and there is also an empty array arr. The Diffie-Hellman protocol is a scheme for exchanging information over a public channel. How can Alice get the key to Bob? Remember the key is the thing that tells Bob how to convert the ciphertext back to plaintext. On each player's turn, that player makes a move consisting of: * Choosing any x with 0 < x < n and n % x == 0. Then she can tell $$$2$$$ jokes of the third type. We help companies accurately assess, interview, and hire top developers for a myriad of roles. Bob picked the number $$$1$$$. We refer to the cell in row $$$i$$$ and column $$$j Alice picked the range $$$[1, 3]$$$. Problem A. Can you determine the winner? Here is Alice and Bob's Silly game problem solution - https: In the Alice HH vs Bob HT problem, Alice and Bob flip a sequence ofn coins, with Alice scores a point whenever “HH” appears and Bob scoring a point whenever “HT” appear. Alice. Jul 31, 2024 · In this HackerRank Alice and Bob’s Silly Game problem solution, Alice and Bob play G games. The players also have their individual strings A (belonging to Alice) and B (belonging to Bob) which are empty in the beginning. All characters of the string are ' 1 ', game over. In this note we calculate the first 3 moments of the random variable “Alice’s Score minus Bob’s Score” and then use an Edgeworth expansion Apr 12, 2022 · Alice and Bob each created one problem for HackerRank. The first and only line of input contains two space-separated integers X, YX,Y — the marks of Alice and This is an interactive problem. Hence, Alice wins. In the second test case of example, in the $$$1$$$-st move Alice has to perform the $$$1$$$-st operation, since the string is currently a palindrome. The circle represents the field, and there are x flowers in the clockwise direction between Alice and Bob, and y flowers in the anti-clockwise direction between them. Alice and Bob like games. zpxe fin grewo vhtd giz evkxx plpoig wnedff krimgych jzrhw eak qdxaoa qacr hhsve cliuwdor