Connected sum leetcode example. Two combinations are unique if the .
Connected sum leetcode example * An integer x is a multiple Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. A province is a group of directly or indirectly connected cities and no other cities outside of the group. If the sum equals the target, return the indices. Each path should be returned as a list of the node values, not node references. LeetCode Problems: Because in the sliding window when we move start (typically when we increment it) we can just substract nums[start-1] from the current sum and we get the sum of the new subarray. You are given a 0-indexed 2D integer array edges of length n - 1, where edges[i] = [ui, vi] indicates that there is an edge between nodes ui and vi in the tree. The walk starts and Can you solve this real interview question? Minimum Value to Get Positive Step by Step Sum - Given an array of integers nums, you start with an initial positive value startValue. You are also given a 2D integer array edges where edges[i] = [ai, bi] denotes that there exists an undirected edge connecting nodes ai and bi. A connected trio is a set of three nodes where there is an edge between every pair of Can you solve this real interview question? Sum of Distances in Tree - There is an undirected connected tree with n nodes labeled from 0 to n - 1 and n - 1 edges. Return an array answer of length n where answer[i] is the sum of the distances between There is an undirected tree with n nodes labeled from 0 to n - 1. May 25, 2019 · An undirected, connected tree with N nodes labelled 0…N-1 and N-1 edges are given. A brick is stable if: * It is directly connected to the top of the grid, or * At least one other brick in its four adjacent cells is stable. Two combinations are unique if the 112. If there is no such j, set arr[i] to be 0. If the sum is greater than the target, move the right pointer to the left. An island in grid2 is considered a sub-island if there is an island Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. The cost of connecting two points [xi, yi] and [xj, yj] is the manhattan distance between them: |xi - xj| + |yi - yj|, where |val| denotes the absolute value of val. The added edge has two different vertices chosen from 1 to n, and was not an edge that already existed. Range Sum Query - Mutable 308. You are given Can you solve this real interview question? Subarray Sum Equals K - Given an array of integers nums and an integer k, return the total number of subarrays whose sum equals to k. Example 1: Input: nums = [1,3,1,1,2] Output: [5,0,3,4,0] Explanation: When i = 0, nums Oct 18, 2016 · 323. Two Sum. You are given an initial Can you solve this real interview question? Number of Operations to Make Network Connected - There are n computers numbered from 0 to n - 1 connected by ethernet cables connections forming a network where connections[i] = [ai, bi] represents a connection between computers ai and bi. A root-to-leaf path is a path starting from the root and ending at any leaf node. Two Sum is a classic problem often used in technical interviews to test algorithmic thinking. Since the answer may be very large, return it modulo 109 + 7. Given an integer array nums and two integers lower and upper, return the number of range sums that lie in [lower, upper] inclusive. Return the number of connected components in nums where two values are connected if they appear consecutively in the linked list. Notice that the given graph may be 303. . Best Time to Buy and Sell Stock; 122. The same number may be chosen from candidates an unlimited number of times. Add a positive integer to an element of a given index in the array nums2. * For example, the beauty of "abaacc" is 3 - 1 = 2. You are given an integer n which is the number of nodes in the graph and an array edges, where each edges[i] = [ui, vi] indicates that there is an undirected edge between ui and vi. A node can only appear in the sequence at most once. Examples: Input: V = 7, E = 4 Values = {10, 25, 5, 15, 5, 20, 0} Output : Max Sum value = 35 Explanation: Component {1, 2} – Value {10, 25}: sumValue = 10 + 25 = 35 Can you solve this real interview question? Redundant Connection - In this problem, a tree is an undirected graph that is connected and has no cycles. A leaf is a node with no Can you solve this real interview question? Largest Component Size by Common Factor - You are given an integer array of unique positive integers nums. Range Sum Query 2D - Immutable 305. Can you solve this real interview question? Modify Graph Edge Weights - You are given an undirected weighted connected graph containing n nodes labeled from 0 to n - 1, and an integer array edges where edges[i] = [ai, bi, wi] indicates that there is an edge between nodes ai and bi with weight wi. Given a string s, return the sum of beauty of all of its substrings. Here the value of the start is jumping and the only way to compute the sum of the current subarray in a constant time is to have the prefix array. Example 1: Input: nums = [-2,5,-1], lower = -2, upper = 2 A connected component is a subgraph of a graph in which there exists a path between any two vertices, and no vertex of the subgraph shares an edge with a vertex Can you solve this real interview question? Find the Maximum Sum of Node Values - There exists an undirected tree with n nodes numbered 0 to n - 1. Minimum Height Trees 311. If city a is connected directly with city b, and city b is connected directly with city c, then city a is connected indirectly with city c. The cities are numbered from 0 to n - 1. For the ith query, find the maximum value of nums1[j] + nums2[j] among all indices j (0 <= j < n), where nums1[j] >= xi and nums2[j] >= yi, or -1 if there is no j satisfying the constraints Can you solve this real interview question? Min Cost to Connect All Points - You are given an array points representing integer coordinates of some points on a 2D-plane, where points[i] = [xi, yi]. Example 1: Input: n = 13 Output: 4 Explanation: There are 9 groups in total, they are grouped according sum of its digits of numbers from 1 to 13: [1,10], [2,11], [3,12], [4 Can you solve this real interview question? Sum of Good Subsequences - You are given an integer array nums. Return the minimum cost to connect all the n cities such that there is at least one Can you solve this real interview question? Maximum Total Importance of Roads - You are given an integer n denoting the number of cities in a country. The triangular sum of nums is the value of the only element present in nums after the following process terminates: 1. The task is to find the connected chain with the maximum sum of values among all the connected components in the graph. If no such integer exists, return -1. Two servers a Mar 13, 2024 · Can you solve this real interview question? Find the Pivot Integer - Given a positive integer n, find the pivot integer x such that: * The sum of all elements between 1 and x inclusively equals the sum of all elements between x and n inclusively. Return the minimum positive value of startValue such that the step by step sum is never less than 1 May 19, 2024 · LeetCode Meditations: Combination Sum. Some edges have a weight of -1 (wi = -1), while others have a positive weight (wi > 0). Example 1: Input: s = "aabcb" Output: 5 Explanation: The substrings with non-zero Return true if the value of the root is equal to the sum of the values of its two children, or false otherwise. Return the sum of all possible good subsequences of nums. Consider the following graph: * There are nums. Example 1: Input: nums = [1,1,1], k = 2 Output: 2 Example 2: Input: nums = [1,2,3], k = 3 Output: 2 Constraints: * 1 <= nums. The nodes are labeled from 1 to n. 2. Best Time to Buy and Sell Stock with Cooldown 310. It's guaranteed that a unique solution Given an integer n, return the number of ways you can write n as the sum of consecutive positive integers. Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. Note that: * A subarray is a contiguous part of the array. Return the pivot integer x. The ith edge connects nodes edges[i][0] and edges[i][1] together. Range Sum Query - Immutable 304. Sep 26, 2024 · A sample problem with an example; Links to related LeetCode problems for practice Binary Tree Maximum Path Sum (LeetCode #124) 11. The Can you solve this real interview question? Minimum Degree of a Connected Trio in a Graph - You are given an undirected graph. Example 2: Can you solve this real interview question? Combination Sum - Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target. The cities graph is not necessarily connected Can you solve this real interview question? Append K Integers With Minimal Sum - You are given an integer array nums and an integer k. You are given the integer n and the array edges where edges[i] = [ai, bi] indicates that there is an edge between nodes ai and bi in the tree. Sparse Matrix Multiplication 🔒 312. You can return the answer in Can you solve this real interview question? Count Pairs of Connectable Servers in a Weighted Tree Network - You are given an unrooted weighted tree with n vertices representing servers numbered from 0 to n - 1, an array edges where edges[i] = [ai, bi, weighti] represents a bidirectional edge between vertices ai and bi of weight weighti. Can you solve this real interview question? Longest Consecutive Sequence - Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence. Distinct Subsequences; 116. Return the smallest level x such that the sum of all the values of nodes at level x is maximal. Example 1: Can you solve this real interview question? Number of Operations to Make Network Connected - There are n computers numbered from 0 to n - 1 connected by ethernet cables connections forming a network where connections[i] = [ai, bi] represents a connection between computers ai and bi. You are also given a 0-indexed integer array values of length n, where Can you solve this real interview question? Sum of Distances in Tree - There is an undirected connected tree with n nodes labeled from 0 to n - 1 and n - 1 edges. Return an array answer of length n where answer[i] is the sum of the distances between the Apr 13, 2021 · Use a hash map to store each node’s connected nodes. Path Sum; 113. Two combinations are unique if the Jul 21, 2024 · Check the sum of the elements at the two pointers. Any cells outside of the grid are considered water cells. length Can you solve this real interview question? Bricks Falling When Hit - You are given an m x n binary grid, where each 1 represents a brick and 0 represents an empty space. For example, if arr = [1, 2] and k = 3 then the modified array will be [1, 2, 1, 2, 1, 2]. Let's start with the description for Combination Sum: Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target. A walk on a graph is a sequence of vertices and edges. You may return the combinations in any order. Example 1: Input: nums = [2,7 🔥LeetCode solutions in any programming language | 多种编程语言实现 LeetCode、《剑指 Offer（第 2 版）》、《程序员面试金典（第 6 版）》题解 - doocs/leetcode Given the root of a binary tree, the level of its root is 1, the level of its children is 2, and so on. The task is simple: identify two numbers in an array that add up to a specific target. Given the root Can you solve this real interview question? Minimum Score of a Path Between Two Cities - You are given a positive integer n representing n cities numbered from 1 to n. Connecting Cities With Minimum Cost Description There are n cities labeled from 1 to n. Your task . If the sum is less than the target, move the left pointer to the right. Populating Next Right Pointers in Each Node II; 118. While the problem seems basic, it introduces important concepts like arrays, hash maps, and analyzing time complexity. * For example, the alternating sum of [4,2,5,3] is (4 + 5) - (2 + 3) = 4. You are given the integer n and a 2D integer array edges of length n - 1, where edges[i] = [a i, b i] indicates that there is an edge between nodes a i and b i in the tree. A connected component is said to be complete if there exists an edge between every pair of its vertices. Example 3: Input: nums = [-2,-1] Output: -1 Explanation: In this example, the subsequence [-1] can be selected. Example 1: Input: nums = [2,7 Dec 13, 2023 · Every node has been assigned a given value. Example 1: Input: nums = [2,7 Can you solve this real interview question? Count Largest Group - You are given an integer n. Pascal's Triangle II; 120. Can you solve this real interview question? Find Edges in Shortest Paths - You are given an undirected weighted graph of n nodes numbered from 0 to n - 1. Each number from 1 to n is grouped according to the sum of its digits. Can you solve this real interview question? Sum of Distances - You are given a 0-indexed integer array nums. Flatten Binary Tree to Linked List; 115. Can you solve this real interview question? Maximum Number of K-Divisible Components - There is an undirected tree with n nodes labeled from 0 to n - 1. You are given a graph that started as a tree with n nodes labeled from 1 to n, with one additional edge added. You are given the integer n and a 2D integer array edges of length n - 1, where edges[i] = [ai, bi] indicates that there is an edge between nodes ai and bi in the tree. It is a balanced subsequence, and its sum is the maximum among the balanced subsequences of nums. You are given a 2D integer array edges where each edges[i] = [ui, vi] indicates that there is an edge between the Can you solve this real interview question? Binary Tree Maximum Path Sum - A path in a binary tree is a sequence of nodes where each pair of adjacent nodes in the sequence has an edge connecting them. For each integer in this array: The hundreds digit represents the depth d of this node where 1 <= d <= 4. If both manifolds are oriented, there is a unique connected sum defined by having the gluing map reverse orientation. You are tasked to implement a data structure that supports queries of two types: 1. If n == 1, end the process. A good subarray is a subarray where: * its length is at least two, and * the sum of the elements of the subarray is a multiple of k. Let nums comprise of n elements. Return a list ans, where ans[i] is the sum of the distances between node i and all other nodes. Path Sum IV Description If the depth of a tree is smaller than 5, then this tree can be represented by an array of three-digit integers. You are also given an array hits, which is a sequence of erasures we want to apply Can you solve this real interview question? Maximum Alternating Subsequence Sum - The alternating sum of a 0-indexed array is defined as the sum of the elements at even indices minus the sum of the elements at odd indices. Find the smallest set of vertices from which all nodes in the graph are reachable. You are given an initial Can you solve this real interview question? Minimum Cost Walk in Weighted Graph - There is an undirected weighted graph with n vertices labeled from 0 to n - 1. Can you solve this real interview question? K-Concatenation Maximum Sum - Given an integer array arr and an integer k, modify the array by repeating it k times. Can you solve this real interview question? Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree - Given a weighted undirected connected graph with n vertices numbered from 0 to n - 1, and an array edges where edges[i] = [ai, bi, weighti] represents a bidirectional and weighted edge between nodes ai and bi. Lastly Can you solve this real interview question? Find Center of Star Graph - There is an undirected star graph consisting of n nodes labeled from 1 to n. Best Time to Buy and Sell Stock Jul 1, 2024 · The Combination Sum problem is a classic challenge on LeetCode that tests your algorithmic skills and your ability to implement efficient backtracking techniques. Return an integer denoting the sum of all numbers in the given range satisfying the constraint. Burst Balloons 313. The nodes are numbered from 0 to n - 1. Number of Islands II 🔒 306. Example 1: Input: n = 5 Output: 2 Explanation: 5 = 2 + 3 Example 2: Oct 30, 2023 · Dive into the Two Sum problem from LeetCode using C#. Additive Number 307. You have a graph of n nodes. The graph is represented as an Jan 6, 2025 · 1. Oct 2, 2024 · BFS Example: LeetCode 127 — Word Ladder Problem : Given two words (start and end), and a dictionary, find the shortest transformation sequence from the start word to the end word, where only one Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. Return the sum of the k integers appended to nums. You are also given an integer signalSpeed. A star graph is a graph where there is one center node and exactly n - 1 edges that connect the center node with every other node. Range sum S(i, j) is defined as the sum of the elements in nums between indices i and j inclusive, where i <= j. There is a street connecting the house numbered i with the house numbered i + 1 for all 1 <= i <= n - 1 . You are also given a 2D integer array edges where edges[i] = [fromi, toi, weighti] denotes that there exists a directed edge from fromi to toi with weight weighti. You are also given a 2D integer array edges, where edges[i] = [ai, bi] indicates that there is a bidirectional edge between nodes ai and bi. A minimum spanning tree (MST) is a subset of the graph's edges that Can you solve this real interview question? Redundant Connection - In this problem, a tree is an undirected graph that is connected and has no cycles. You need to assign each city with an integer value from 1 Can you solve this real interview question? Minimum Number of Vertices to Reach All Nodes - Given a directed acyclic graph, with n vertices numbered from 0 to n-1, and an array edges where edges[i] = [fromi, toi] represents a directed edge from node fromi to node toi. Can you solve this real interview question? Maximum Sum Queries - You are given two 0-indexed integer arrays nums1 and nums2, each of length n, and a 1-indexed 2D array queries where queries[i] = [xi, yi]. Append k unique positive integers that do not appear in nums to nums such that the resulting total sum is minimum. Sum of Distances in Tree Description There is an undirected connected tree with n nodes labeled from 0 to n - 1 and n - 1 edges. Depth-First Search (DFS) changing connected cells of the Can you solve this real interview question? Number of Operations to Make Network Connected - There are n computers numbered from 0 to n - 1 connected by ethernet cables connections forming a network where connections[i] = [ai, bi] represents a connection between computers ai and bi. Jan 8, 2019 · Welcome to Subscribe On Youtube 1135. You are given an initial Can you solve this real interview question? Sum Multiples - Given a positive integer n, find the sum of all integers in the range [1, n] inclusive that are divisible by 3, 5, or 7. In a city, there exist houses numbered 1 to n connected by n streets. A connected trio is a set of three nodes where there is an edge between every pair of Can you solve this real interview question? Number of Provinces - There are n cities. A good subsequence is defined as a subsequence of nums where the absolute difference between any two consecutive elements in the subsequence is exactly 1. Return the minimum cost to make A connected sum of two m-dimensional manifolds is a manifold formed by deleting a ball inside each manifold and gluing together the resulting boundary spheres. A It can be shown that it is not possible to get a balanced subsequence with a sum greater than 13. Example 1: Input: n = 5, edges = [[0,1],[1,2],[3 Can you solve this real interview question? Number of Operations to Make Network Connected - There are n computers numbered from 0 to n - 1 connected by ethernet cables connections forming a network where connections[i] = [ai, bi] represents a connection between computers ai and bi. You A connected component is a subgraph of a graph in which there exists a path between any two vertices, and no vertex of the subgraph shares an edge with a vertex outside of the subgraph. Example 1: Input: n = 7 Output: 21 Explanation: Numbers in the range [1, 7] that are divisible by 3, 5, or 7 are 3, 5 Sep 26, 2017 · Welcome to Subscribe On Youtube 666. Depth-First Search (DFS) changing connected cells of the Mar 13, 2018 · Welcome to Subscribe On Youtube 834. Can you solve this real interview question? Minimum Degree of a Connected Trio in a Graph - You are given an undirected graph. Can you solve this real interview question? Divide Nodes Into the Maximum Number of Groups - You are given a positive integer n representing the number of nodes in an undirected graph. Note that the path does not need to pass through the root. Return the number of groups that have the largest size. Any computer can reach any other computer directly or indirectly through the network. You can return the answer in Can you solve this real interview question? Number of Provinces - There are n cities. Explore various solutions, from brute force to hash map approaches, and understand their complexities. Example 2: Input: nums = [3,2,4 Can you solve this real interview question? Path Sum II - Given the root of a binary tree and an integer targetSum, return all root-to-leaf paths where the sum of the node values in the path equals targetSum. Range Sum Query 2D - Mutable 🔒 309. length, where arr[i] is the sum of |i - j| over all j such that nums[j] == nums[i] and j != i. Triangle; 121. Note: You can only move either down or right at any point in time. length <= 2 * 104 Can you solve this real interview question? Maximum Score of a Node Sequence - There is an undirected graph with n nodes, numbered from 0 to n - 1. An additional street connects the house numbered x with the house You are given the head of a linked list containing unique integer values and an integer array nums that is a subset of the linked list values. I have found that solutions to the combination sum problem are often very difficult to test. The graph consists of m edges represented by a 2D array edges, where edges[i] = [ai, bi, wi] indicates that there is an edge between nodes ai and bi with weight wi. In each iteration, you calculate the step by step sum of startValue plus elements in nums (from left to right). Note that a Can you solve this real interview question? Number of Operations to Make Network Connected - There are n computers numbered from 0 to n - 1 connected by ethernet cables connections forming a network where connections[i] = [ai, bi] represents a connection between computers ai and bi. The graph is represented as an Can you solve this real interview question? Find Triangular Sum of an Array - You are given a 0-indexed integer array nums, where nums[i] is a digit between 0 and 9 (inclusive). If the three nodes form a connected trio, calculate the sum of the numbers of edges that connect to the three nodes and subtract 6 from the sum (to exclude the edges inside the trio). (A domino is a tile with two numbers from 1 to 6 - one on each half of the tile. You are given Can you solve this real interview question? Finding Pairs With a Certain Sum - You are given two integer arrays nums1 and nums2. You are given a 0-indexed integer array scores of length n where scores[i] denotes the score of node i. 10 is equal to 4 + 6, so we return true. You are given an initial Can you solve this real interview question? Sum of Beauty of All Substrings - The beauty of a string is the difference in frequencies between the most frequent and least frequent characters. Populating Next Right Pointers in Each Node; 117. length nodes, labeled nums[0] to nums[nums. The tens digit represents the position p of this node in the level it belongs to where 1 <= p <= 8. Example 1: Input: n = 5 Output: 2 Explanation: 5 = 2 + 3 Example 2: Can you solve this real interview question? Minimum Domino Rotations For Equal Row - In a row of dominoes, tops[i] and bottoms[i] represent the top and bottom halves of the ith domino. You are also given a 2D integer array roads where roads[i] = [ai, bi] denotes that there exists a bidirectional road connecting cities ai and bi. Can you solve this real interview question? Continuous Subarray Sum - Given an integer array nums and an integer k, return true if nums has a good subarray or false otherwise. By this, I mean that walking through an example can be challenging due to the many recursive calls involved. You are given the integer n and an array connections where connections[i] = [xi, yi, costi] indicates that the cost of connecting city xi and city yi (bidirectional connection) is costi. The path sum of a path is the sum of the node's values in the path. You are given an integer n and an array edges where edges[i] = [a i, b i] indicates that there is an edge between a i and b i in the graph. Example 1: Input: root = [10,4,6] Output: true Explanation: The values of the root, its left child, and its right child are 10, 4, and 6, respectively. It's a problem frequently encountered in coding interviews, making it an essential part of your preparation toolkit. Example 1: Input: n = 7 Output: 21 Explanation: Numbers in the range [1, 7] that are divisible by 3, 5, or 7 are 3, 5 Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right, which minimizes the sum of all numbers along its path. Otherwise, create a new 0-indexed 207 LeetCode Java: Course Schedule – Medium 208 LeetCode Java: Implement Trie (Prefix Tree) – Medium 209 LeetCode Java : Minimum Size Subarray Sum – Medium 210 LeetCode Java: Course Schedule II – Medium Can you solve this real interview question? Count the Number of Houses at a Certain Distance I - You are given three positive integers n, x, and y. There exists an array arr of length nums. Some of them are connected, while some are not. Then loop over all tuples of nodes and determine whether the three nodes form a connected trio. Path Sum II; 114. Example 1: Input: nums = [1,4,25,10,25], k = 2 Output: 5 Explanation: The two unique positive Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. Return an array answer of length n where answer[i] is the sum of the distances between the Can you solve this real interview question? Largest Component Size by Common Factor - You are given an integer array of unique positive integers nums. length - 1], * There is an undirected edge between nums[i] and nums[j] if nums[i] and nums[j] share a common factor greater than 1. Can you solve this real interview question? Sum of Distances in Tree - There is an undirected connected tree with n nodes labeled from 0 to n - 1 and n - 1 edges. ) We may rotate the ith domino, so that tops[i] and bottoms[i] swap values. Number of Connected Components in an Undirected Graph Description. Pascal's Triangle; 119. Consider all the shortest paths from node 0 to node n - 1 in the graph. Can you solve this real interview question? Minimum Weighted Subgraph With the Required Paths - You are given an integer n denoting the number of nodes of a weighted directed graph. It is guaranteed that there will be at most one pivot index for the given input Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You are also given a positive integer k, and a 0-indexed array of non-negative integers Can you solve this real interview question? Count Sub Islands - You are given two m x n binary matrices grid1 and grid2 containing only 0's (representing water) and 1's (representing land). An island is a group of 1's connected 4-directionally (horizontal or vertical). Can you solve this real interview question? Combination Sum - Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target. A subarray is a contiguous non-empty sequence of elements within an array. Return an array answer of length n where answer[i] is the sum of the distances between the Nov 16, 2024 · This is a simple solution code and walkthrough of the leetcode problem combination sum. You are given the integer n and an array edges, where edges[i] = [ui, vi, wi] indicates that there is an edge between vertices ui and vi with a weight of wi. Return the number of connected components in the graph. Return the array arr. You are also given a 2D array roads where roads[i] = [ai, bi, distancei] indicates that there is a bidirectional road between cities ai and bi with a distance equal to distancei. \n. Example 1: Sep 26, 2024 · A sample problem with an example; Links to related LeetCode problems for practice Binary Tree Maximum Path Sum (LeetCode #124) 11. Return the minimum number of rotations so that all the Given an integer n, return the number of ways you can write n as the sum of consecutive positive integers. Count the number of pairs (i, j) such that nums1[i] + nums2[j] equals a given value (0 <= i < nums1. fmbbukfgeguxqguuwvzdnfbnqecryigeqfsymvjxrxdjhfbgfpkjif