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You are organizing a cooking competition where contestants are judged based on the total time taken to prepare a set of dishes. The winner is the contestant who completes their dishes in the shortest amount of time. Create a program that reads the list of contestant numbers and their total cooking times in minutes and...	<think> Okay, I need to solve this problem where I have to find the winner of a cooking competition based on their cooking times. The winner is the one with the shortest time, and if there's a tie, the contestant with the smaller number wins. First, I should think about the steps I need to take. Let me see. The input ...	[ { "from": "human", "value": "You are organizing a cooking competition where contestants are judged based on the total time taken to prepare a set of dishes. The winner is the contestant who completes their dishes in the shortest amount of time.\n\nCreate a program that reads the list of contestant numbers a...
San and Mei love to play games that enhance their problem-solving abilities. Recently, they came across a unique game involving magic squares. A magic square is a grid of distinct numbers where the sum of each row, column, and both diagonals is the same. San and Mei's task is to transform any given 3x3 grid into a magi...	<think> Okay, I need to solve this problem where I have to find the minimum cost to turn a 3x3 grid into a magic square. Hmm, let's think about what a magic square is. Oh right, a 3x3 magic square is one where all rows, columns, and the two main diagonals add up to the same sum. And each number from 1 to 9 appears exac...	[ { "from": "human", "value": "San and Mei love to play games that enhance their problem-solving abilities. Recently, they came across a unique game involving magic squares. A magic square is a grid of distinct numbers where the sum of each row, column, and both diagonals is the same. San and Mei's task is to...
Consider a group of friends who are planning a vacation. They need to decide on the destination based on individual preferences. Each friend assigns a score to each destination, and they will choose the place which gets the highest cumulative score. Write a program that determines the winning destination. Input: - The...	<think> Okay, I need to solve this problem where a group of friends choose a vacation destination based on their scores. The goal is to find which destination has the highest total score and output its index. If there's a tie, pick the smallest index. Hmm, let's break it down. The input includes two integers n and m. ...	[ { "from": "human", "value": "Consider a group of friends who are planning a vacation. They need to decide on the destination based on individual preferences. Each friend assigns a score to each destination, and they will choose the place which gets the highest cumulative score. Write a program that determin...
-----Input----- The input contains a single string s (1 ≤ \|s\| ≤ 100), consisting only of lowercase English letters. -----Output----- Output a single string which is the reverse of s. -----Example----- Input hello Output olleh ### Format: Generate an executable Python function to solve the given problem. The fun...	<think> Okay, so I have to write a Python function that takes a string and returns its reverse. Hmm, how do I approach this? Wait, the input is a single string s, right? And the output is just the reverse. So for example, 'hello' becomes 'olleh'. Got it. I remember that in Python, strings can be reversed using slicin...	[ { "from": "human", "value": "-----Input-----\n\nThe input contains a single string s (1 ≤ \|s\| ≤ 100), consisting only of lowercase English letters.\n\n\n-----Output-----\n\nOutput a single string which is the reverse of s.\n\n\n-----Example-----\nInput\nhello\n\nOutput\nolleh\n\n### Format: Generate an exec...
Given an integer array nums, return the length of the longest arithmetic subarray. An arithmetic subarray is a subarray that contains at least two elements and the difference between consecutive elements is the same. Example 1: Input: nums = [3, 6, 9, 12] Output: 4 Example 2: Input: nums = [1, 2, 2, 5, 7, 8, 8, 9] Ou...	<think> Okay, I need to solve this problem where I have to find the length of the longest arithmetic subarray in a given integer array. Hmm, let's think about what an arithmetic subarray is. Oh right, it's a subarray where the difference between consecutive elements is constant. And the subarray must have at least two ...	[ { "from": "human", "value": "Given an integer array nums, return the length of the longest arithmetic subarray. An arithmetic subarray is a subarray that contains at least two elements and the difference between consecutive elements is the same.\n\nExample 1:\nInput: nums = [3, 6, 9, 12]\nOutput: 4\n\nExamp...
You are a systems developer tasked with writing a program that will calculate the minimum number of coins needed to make change for a given amount. You have coins of different denominations available, and you need to use as few coins as possible to match the exact amount. --- Rules: - You will be provided with a list ...	<think> Okay, I need to solve this problem where I have to find the minimum number of coins needed to make a certain amount. Hmm. Let me think about the problem. So, the task is: given a list of coin denominations and an amount, I have to find the fewest number of coins that sum up to that amount. If it's not possible...	[ { "from": "human", "value": "You are a systems developer tasked with writing a program that will calculate the minimum number of coins needed to make change for a given amount. You have coins of different denominations available, and you need to use as few coins as possible to match the exact amount.\n\n---...
Victor is developing a simple text editor. One of the features he wants to implement is an undo functionality that allows a user to revert the last text change. To implement this, he needs to track changes made by the user and then undo them upon request. You are tasked with writing a program that simulates this undo ...	<think> Okay, I need to solve this problem where I have to implement an undo functionality for a text editor. Hmm, the problem says that given a series of operations—add, delete, undo—I have to apply them in order and then output the final string. So, let's think about how to approach this. The initial string is empty...	[ { "from": "human", "value": "Victor is developing a simple text editor. One of the features he wants to implement is an undo functionality that allows a user to revert the last text change. To implement this, he needs to track changes made by the user and then undo them upon request.\n\nYou are tasked with ...
Design a function that takes an integer array with an even number of elements and rearranges it so that every pair of adjacent elements are swapped. Example 1: Input: arr = [1, 2, 3, 4, 5, 6] Output: [2, 1, 4, 3, 6, 5] Example 2: Input: arr = [8, 0, 7, 1, 2, 9] Output: [0, 8, 1, 7, 9, 2] Your Task: You don't need...	<think> Okay, I need to solve this problem where I have to design a function called swapAdjacentPairs that takes an integer array with an even number of elements and rearranges it so that every pair of adjacent elements are swapped. Hmm, let's think about how to approach this. First, let's look at the examples provide...	[ { "from": "human", "value": "Design a function that takes an integer array with an even number of elements and rearranges it so that every pair of adjacent elements are swapped. \n\nExample 1:\nInput: \narr = [1, 2, 3, 4, 5, 6]\nOutput: [2, 1, 4, 3, 6, 5]\n\nExample 2:\nInput: \narr = [8, 0, 7, 1, 2, 9]\nOu...
# Sum of all Digits in a String ___ # Task _Given_ a string of any length that contains both numerical and non-numerical characters, _Find_ the _sum of all digits_ in the string. ___ # Notes * Each character in the string could be a digit (0-9), letter, or other symbols. * You need to return the s...	<think> Okay, so I need to solve this problem where I have to find the sum of all the digits in a given string. Hmm. Let me think about how to approach this. First, the problem statement says that the string can have any characters—numbers, letters, symbols, etc. My task is to go through each character and add up all ...	[ { "from": "human", "value": "# Sum of all Digits in a String\n\n___\n\n# Task\n\n_Given_ a string of any length that contains both numerical and non-numerical characters, _Find_ the _sum of all digits_ in the string.\n\n___\n\n# Notes \n\n* Each character in the string could be a digit (0-9), ...
### Favorite Digit Distance Alex loves a particular digit more than others. He considers a number perfect if the favorite digit appears in it at least `X` times. Alex now wants to find the closest perfect number greater than or equal to a given number `N`. ### Task: Determine the smallest integer greater than or equa...	<think> Okay, I need to solve this problem where I have to find the closest perfect number greater than or equal to N. A perfect number here means that the favorite digit D appears at least X times in it. So, let me think about how to approach this. First, the input will be N, D, and X. My task is to find the smallest...	[ { "from": "human", "value": "### Favorite Digit Distance\n\nAlex loves a particular digit more than others. He considers a number perfect if the favorite digit appears in it at least `X` times. Alex now wants to find the closest perfect number greater than or equal to a given number `N`.\n\n### Task:\nDeter...
You are managing an electronic billboard that displays a sequence of messages. Each message is displayed for a specific duration in seconds. The total duration for all messages combined must not exceed a given limit of N seconds. To efficiently utilize the billboard time, you must select a subset of messages such that...	<think> Okay, I need to solve this problem where I have to select a subset of messages such that their total duration is as close as possible to N without exceeding it. Hmm, right. So the problem is similar to the classic knapsack problem, where items have weights and values, and we want to maximize the value without e...	[ { "from": "human", "value": "You are managing an electronic billboard that displays a sequence of messages. Each message is displayed for a specific duration in seconds. The total duration for all messages combined must not exceed a given limit of N seconds.\n\nTo efficiently utilize the billboard time, you...
[end of section]. You are given a string representing a section of a document. You must ensure that the section ends with the phrase `[end of section]`. If the string already ends with this phrase, return the original string. If not, append the phrase to the string, ensuring there is a single space between the last w...	<think> Okay, I need to solve this problem where I'm given a string, and I have to make sure it ends with "[end of section]". If it doesn't, I append it with a space. Hmm. So first, I should check if the string already ends with that phrase. How can I do that in Python? Oh right, I can use the endswith() method. So if...	[ { "from": "human", "value": "[end of section]. \n\nYou are given a string representing a section of a document. You must ensure that the section ends with the phrase `[end of section]`. If the string already ends with this phrase, return the original string. If not, append the phrase to the string, ensuring...
Consider a game where a player can step forward by either 1 unit or 2 units at a time. Given a distance `D`, the player's task is to reach exactly D units from the start (0 units). The player can only use valid moves (stepping 1 unit or 2 units at a time). The player, however, wants to count the total number of distin...	<think> Okay, I have this programming problem to solve. Let's see what it's about. So, the problem is about a player who can take steps of 1 or 2 units at a time, and we need to find the number of distinct ways they can reach exactly D units. Hmm, sounds familiar—like a dynamic programming problem. The first thing I'm...	[ { "from": "human", "value": "Consider a game where a player can step forward by either 1 unit or 2 units at a time. Given a distance `D`, the player's task is to reach exactly D units from the start (0 units). The player can only use valid moves (stepping 1 unit or 2 units at a time).\n\nThe player, however...
David is a scientist who works on analyzing DNA sequences. He is currently working on a project where he needs to identify specific patterns that repeat in a given DNA sequence. A DNA sequence is represented as a string consisting of the characters 'A', 'C', 'G', and 'T'. David wants to know the positions of all the st...	<think> Okay, I need to solve this problem where I have to find all starting indices of a given pattern in a DNA sequence. Let me think about how to approach this. So, the input is the length of the DNA sequence, then the DNA string itself, and then the pattern. My task is to find all the positions where the pattern a...	[ { "from": "human", "value": "David is a scientist who works on analyzing DNA sequences. He is currently working on a project where he needs to identify specific patterns that repeat in a given DNA sequence. A DNA sequence is represented as a string consisting of the characters 'A', 'C', 'G', and 'T'. David ...
Input The input contains a single integer n (1 ≤ n ≤ 1000). Output Print a single integer which is the sum of squares of the first n positive integers. Examples Input 3 Output 14 ### Format: Generate an executable Python function to solve the given problem. The function should read input from `stdin` and write...	<think> Okay, I need to solve this problem where I have to compute the sum of squares of the first n positive integers. Hmm, the input is a single integer n, and the output is the sum. For example, if n is 3, then 1² + 2² + 3² equals 14, which is the output. So, first, I should think about how to calculate this sum. I...	[ { "from": "human", "value": "Input\n\nThe input contains a single integer n (1 ≤ n ≤ 1000).\n\nOutput\n\nPrint a single integer which is the sum of squares of the first n positive integers.\n\nExamples\n\nInput\n\n3\n\nOutput\n\n14\n\n### Format: Generate an executable Python function to solve the given pro...
Design a function `max_consecutive_ones` which takes a binary list and returns the maximum number of consecutive 1s in that list. The function should handle edge cases where the list is empty or contains only zeros or ones. Example: ```python # Given a binary list [0, 1, 1, 0, 1, 1, 1, 0], the function should return ...	<think> Okay, I need to design a function called max_consecutive_ones that takes a binary list and returns the maximum number of consecutive 1s. Hmm, how do I approach this? First, I should think about the problem. The task is to find the longest sequence of 1s in a row in the list. So for each element in the list, if...	[ { "from": "human", "value": "Design a function `max_consecutive_ones` which takes a binary list and returns the maximum number of consecutive 1s in that list. The function should handle edge cases where the list is empty or contains only zeros or ones.\n\nExample:\n\n```python\n# Given a binary list [0, 1, ...
In an imaginary city, there are N houses arranged in a straight line. Each house has a certain number of candies. Due to a magical spell, if you collect candies from two consecutive houses, you must collect them from all houses that lie between those two houses, inclusive. You can only collect candies from at most one ...	<think> Okay, let's see. So, I've got this problem where I need to find the maximum number of candies I can collect from a row of houses. Hmm. The rules are that if I collect from two consecutive houses, I have to collect all the in-between ones, and I can only do this for at most one such pair. Also, I can collect fro...	[ { "from": "human", "value": "In an imaginary city, there are N houses arranged in a straight line. Each house has a certain number of candies. Due to a magical spell, if you collect candies from two consecutive houses, you must collect them from all houses that lie between those two houses, inclusive. You c...
Mr. Johnson loves gardening and owns a beautiful square-shaped garden. During the summer, he faces a challenge in maintaining the garden due to the scorching heat and heavy foot traffic that damages the plants. To help him monitor and manage his garden effectively, he needs to calculate the total amount of water requir...	<think> Okay, I need to solve this problem where Mr. Johnson's garden is represented as an N x N grid, and after T updates, I have to compute the total water required. Hmm. So the input starts with N and T. Then there are N lines each with N integers representing the initial water levels. Then T lines each with r, c, ...	[ { "from": "human", "value": "Mr. Johnson loves gardening and owns a beautiful square-shaped garden. During the summer, he faces a challenge in maintaining the garden due to the scorching heat and heavy foot traffic that damages the plants. To help him monitor and manage his garden effectively, he needs to c...
Bilal is planning to build a large rectangular garden to grow a variety of vegetables. He has a limited amount of fencing material and he wants to maximize the area of this garden. The garden should have sides of integer lengths and must be enclosed entirely within the available fencing material. The total length of t...	<think> Okay, I need to solve this problem where Bilal wants to build a rectangular garden with the maximum area possible using a given perimeter P. The sides must be integers, and the fencing material can't exceed P. Hmm. First, let me understand the problem. For a rectangle, the perimeter is given by P = 2*(l + w), ...	[ { "from": "human", "value": "Bilal is planning to build a large rectangular garden to grow a variety of vegetables. He has a limited amount of fencing material and he wants to maximize the area of this garden. The garden should have sides of integer lengths and must be enclosed entirely within the available...
You are given a string consisting of words and numbers separated by spaces. Write a function that rearranges the string so that all numbers appear before all words, while preserving the relative order of numbers and words within their respective groups. If the input string is empty, return an empty string. ### Format:...	<think> Okay, I need to write a Python function that rearranges a string so all numbers come before words, maintaining their relative order within their groups. Hmm, let's think about it. So, the input is a string with words and numbers separated by spaces. For example, something like "hello 5 world 3a 4" would become...	[ { "from": "human", "value": "You are given a string consisting of words and numbers separated by spaces. Write a function that rearranges the string so that all numbers appear before all words, while preserving the relative order of numbers and words within their respective groups. If the input string is em...
Find the sum of the digits of a number until you get a single digit. Example 1: Input: N = 38 Output: 2 Explanation: 3 + 8 = 11, 1 + 1 = 2 (single digit) Example 2: Input: N = 123 Output: 6 Explanation: 1 + 2 + 3 = 6 (single digit) Your Task: You don't need to read input or print anything. Your task is to complete t...	<think> Okay, so I need to write a function called sumOfDigits that takes an integer N as input and returns the sum of its digits until we get a single digit. Hmm, let's think about how to approach this. First, let me understand the problem with the examples given. For example, when N is 38, the sum is 3 + 8 = 11, the...	[ { "from": "human", "value": "Find the sum of the digits of a number until you get a single digit.\n\nExample 1:\nInput:\nN = 38\nOutput:\n2\nExplanation:\n3 + 8 = 11,\n1 + 1 = 2 (single digit)\n\nExample 2:\nInput:\nN = 123\nOutput:\n6\nExplanation:\n1 + 2 + 3 = 6 (single digit)\n\nYour Task:\nYou don't nee...
The Fibonacci sequence is a well-known sequence of numbers in mathematics, where the first two numbers are $0$ and $1$, and each subsequent number is the sum of the two preceding ones. Mathematically, the sequence is defined as follows: - $F(0) = 0$ - $F(1) = 1$ - $F(n) = F(n - 1) + F(n - 2)$ for $n \geq 2$ In this p...	<think> Okay, I need to solve this problem where I have to find the nth term in the Fibonacci sequence using a recursive function. Hmm, let's think about how to approach this. First, I remember that the Fibonacci sequence starts with 0 and 1. So F(0) is 0, F(1) is 1, and each subsequent term is the sum of the two prev...	[ { "from": "human", "value": "The Fibonacci sequence is a well-known sequence of numbers in mathematics, where the first two numbers are $0$ and $1$, and each subsequent number is the sum of the two preceding ones. Mathematically, the sequence is defined as follows:\n\n- $F(0) = 0$\n- $F(1) = 1$\n- $F(n) = F...
Problem Statement You are given an undirected graph G with N vertices and M edges. Each vertex is numbered from 1 to N, and each edge connects two distinct vertices u_i and v_i (1 \leq i \leq M). Your task is to determine if the graph G contains any simple cycle of length exactly 4. A simple cycle is a cycle that visi...	<think> Okay, I need to determine if a given undirected graph has a simple cycle of exactly length 4. Hmm, a simple cycle is one where each vertex is visited exactly once except the starting and ending vertex, which is the same. So for length 4, the cycle would have four distinct vertices connected in a loop. Let me t...	[ { "from": "human", "value": "Problem Statement\n\nYou are given an undirected graph G with N vertices and M edges. Each vertex is numbered from 1 to N, and each edge connects two distinct vertices u_i and v_i (1 \\leq i \\leq M). Your task is to determine if the graph G contains any simple cycle of length e...
In a kingdom far away, the king decided to hold a grand feast. He invited all the wizards and magicians in the land. To ensure the feast is successful, the king wanted to prepare exactly `n` dishes. However, there is a catch: the king only has `m` ingredients, and each dish requires a specific set of ingredients. Each...	<think> Okay, so I need to solve this problem where the king wants to prepare as many dishes as possible with the given ingredients. Hmm. Let me think about how to approach this. The problem says that each dish requires a specific set of ingredients, and the king has all the ingredients from 1 to m. Wait, no, wait. Wa...	[ { "from": "human", "value": "In a kingdom far away, the king decided to hold a grand feast. He invited all the wizards and magicians in the land. To ensure the feast is successful, the king wanted to prepare exactly `n` dishes. However, there is a catch: the king only has `m` ingredients, and each dish requ...
You have been hired by a software company for your string manipulation and logical reasoning abilities. As your first task, you are required to write a function that compresses a given string using the Run-Length Encoding (RLE) algorithm. Run-Length Encoding is a simple form of lossless data compression in which runs ...	<think> Okay, I need to write a Python function called rle_encode that takes a non-empty string and returns its run-length encoded version. Hmm, let's think about how to approach this. Run-Length Encoding (RLE) works by replacing consecutive repeated characters with the character followed by the count. So for example,...	[ { "from": "human", "value": "You have been hired by a software company for your string manipulation and logical reasoning abilities. As your first task, you are required to write a function that compresses a given string using the Run-Length Encoding (RLE) algorithm.\n\nRun-Length Encoding is a simple form ...
You are given a string $s$ consisting of lowercase English letters. You can apply the following operation on the string any number of times: - Choose any character from the string and move it to any other position in the string. The goal is to check if it is possible to make the string a palindrome by performing the ...	<think> Okay, I need to solve this problem where I have to determine if a given string can be rearranged into a palindrome. Hmm, I remember that a palindrome reads the same forwards and backwards. So, to form a palindrome by rearranging the letters, the string must meet certain conditions in terms of character frequenc...	[ { "from": "human", "value": "You are given a string $s$ consisting of lowercase English letters. You can apply the following operation on the string any number of times:\n\n- Choose any character from the string and move it to any other position in the string.\n\nThe goal is to check if it is possible to ma...
Emma is an aspiring software engineer. She is fascinated by palindromes. A palindrome is a string that reads the same backward as forward. Emma enjoys finding the longest palindromic substring within a given string. To challenge herself, she has decided to write a program that finds the length of the longest palindromi...	<think> Okay, I have to solve this problem where I need to find the length of the longest palindromic substring in a given string. Let's think about how to approach this. First, I remember that a palindrome reads the same forwards and backwards. So for any substring, I need to check if it's a palindrome and keep trac...	[ { "from": "human", "value": "Emma is an aspiring software engineer. She is fascinated by palindromes. A palindrome is a string that reads the same backward as forward. Emma enjoys finding the longest palindromic substring within a given string. To challenge herself, she has decided to write a program that f...
Write a function that takes a list of integers and returns a list of those integers, sorted in ascending order, but with all the zeros moved to the end. For example: Input: [0, 2, 3, 0, 1, 4] Output: [1, 2, 3, 4, 0, 0] Note: The order of non-zero elements should be preserved. ### Format: Generate an executable Pyt...	<think> Okay, I need to solve this problem where I have to write a Python function that takes a list of integers, sorts them in ascending order but moves all the zeros to the end. Hmm, right. The example given was [0,2,3,0,1,4] and the output is [1,2,3,4,0,0]. So, non-zero elements are in their original relative order ...	[ { "from": "human", "value": "Write a function that takes a list of integers and returns a list of those integers, sorted in ascending order, but with all the zeros moved to the end.\n\nFor example:\n\nInput: [0, 2, 3, 0, 1, 4]\n\nOutput: [1, 2, 3, 4, 0, 0]\n\nNote: The order of non-zero elements should be p...
You are given an array of integers representing the profits of investing in different stocks over a period of days. You can make at most one transaction, meaning you can choose one day to buy a stock and another day in the future to sell that stock. Write a function maxProfit that computes the maximum profit you can ac...	<think> Okay, I need to solve this problem where I have an array of stock prices, and I need to find the maximum profit possible by making at most one transaction. So the task is to buy low and sell high, but I can only do it once. If there's no way to make a profit, I return 0. Let me think about how to approach this...	[ { "from": "human", "value": "You are given an array of integers representing the profits of investing in different stocks over a period of days. You can make at most one transaction, meaning you can choose one day to buy a stock and another day in the future to sell that stock. Write a function maxProfit th...
Given a string consisting of lowercase letters, determine the minimum number of moves needed to make all characters in the string the same. In one move, you can choose any character and change it to any other lowercase letter. ### Input The input consists of a single line containing a string of lowercase letters. The ...	<think> Okay, so I have to solve this problem where I need to find the minimum number of moves to make all characters in a string the same. Hmm, let's think about it. Wait, the move is changing any character to another. So for each move, I can change one character. The goal is to make the entire string consist of the ...	[ { "from": "human", "value": "Given a string consisting of lowercase letters, determine the minimum number of moves needed to make all characters in the string the same. In one move, you can choose any character and change it to any other lowercase letter.\n\n### Input\nThe input consists of a single line co...
You are given a string that represents an encoded message. The message is encoded where 'A' starts at 1, 'B' is 2, ..., and 'Z' is 26. You are tasked with counting how many different ways the message can be decoded. Assume that the input is always valid. Example: encoded_message = "12" There are 2 possible decodings...	<think> Okay, I need to solve this problem where I have to find the number of ways to decode a given encoded message string. The encoding is based on A being 1, B 2, up to Z as 26. So each character in the string represents a number, and sometimes groups of two digits can form a number that also corresponds to a letter...	[ { "from": "human", "value": "You are given a string that represents an encoded message. The message is encoded where 'A' starts at 1, 'B' is 2, ..., and 'Z' is 26. You are tasked with counting how many different ways the message can be decoded. Assume that the input is always valid.\n\nExample:\n\nencoded_m...
Ram is working on a project that involves analyzing Fibonacci sequences. For his project, he needs to generate the Fibonacci sequence up to a certain number and sum the even-valued terms. Unfortunately, Ram's busy schedule prevents him from coding it himself, and he has approached you for help. Write a program that ta...	<think> Okay, I need to solve this problem where I have to find the sum of all even-valued terms in the Fibonacci sequence up to a given number n. Hmm. Let's think about how to approach this. First, I remember that the Fibonacci sequence starts with 0 and 1, and each subsequent term is the sum of the previous two. But...	[ { "from": "human", "value": "Ram is working on a project that involves analyzing Fibonacci sequences. For his project, he needs to generate the Fibonacci sequence up to a certain number and sum the even-valued terms. Unfortunately, Ram's busy schedule prevents him from coding it himself, and he has approach...
Emily is trying to decorate a Christmas tree using N strings of lights. Each of the strings is of different length. Emily wants to create a beautiful pattern with the lights by arranging them in a straight line in ascending order of their lengths. However, due to a manufacturing defect, some of the lights' lengths migh...	<think> Okay, so I have this problem where Emily is trying to decorate a Christmas tree with N strings of lights. Each string is a different length, and she wants to arrange them in a straight line in ascending order. But some of the lengths might be repeating due to a defect. My task is to find the minimal number of c...	[ { "from": "human", "value": "Emily is trying to decorate a Christmas tree using N strings of lights. Each of the strings is of different length. Emily wants to create a beautiful pattern with the lights by arranging them in a straight line in ascending order of their lengths. However, due to a manufacturing...
A newly discovered programming language has a unique way of representing strings. Any string in this language consists of concatenated substrings where each substring is wrapped with a specific start and end character. The start character is always '[' and the end character is always ']'. Write a program to extract and...	<think> Okay, I need to solve this programming problem. Let's read the problem statement carefully. So, the problem is about processing a string that's made up of multiple substrings wrapped between '[' and ']'. My task is to extract all these substrings, remove duplicates while preserving the order of their first occ...	[ { "from": "human", "value": "A newly discovered programming language has a unique way of representing strings. Any string in this language consists of concatenated substrings where each substring is wrapped with a specific start and end character. The start character is always '[' and the end character is a...
A sequence of numbers is called a "wiggle sequence" if the differences between successive numbers strictly alternate between positive and negative. The first difference (if one exists) may be either positive or negative. A sequence with fewer than two elements is trivially a wiggle sequence. For example, [1, 7, 4, 9, ...	<think> Okay, so I need to solve this problem where I have to determine whether a given sequence of numbers is a wiggle sequence. Let's make sure I understand the problem correctly. A wiggle sequence is one where the differences between successive numbers strictly alternate between positive and negative. Oh right, and...	[ { "from": "human", "value": "A sequence of numbers is called a \"wiggle sequence\" if the differences between successive numbers strictly alternate between positive and negative. The first difference (if one exists) may be either positive or negative. A sequence with fewer than two elements is trivially a w...
A company is planning to organize a team-building event for their employees. As part of the event, they have decided to include a treasure hunt. The treasure hunt involves solving a series of puzzles that lead to the final prize. The organization wants to ensure that the event is both engaging and challenging, so they ...	<think> Okay, so I've got this problem to solve. Let's see what it's about. The task is to find the shortest path in a maze represented as a graph. The graph has nodes (rooms) connected by edges (corridors). The starting node is s and the target is t. I need to output the length of the shortest path or -1 if there's no...	[ { "from": "human", "value": "A company is planning to organize a team-building event for their employees. As part of the event, they have decided to include a treasure hunt. The treasure hunt involves solving a series of puzzles that lead to the final prize. The organization wants to ensure that the event i...
Given a list of non-negative integers representing the amount of rainwater trapped at different sections, compute how much water can be trapped after filling it. Example 1: Input: height = [0,1,0,2,1,0,1,3,2,1,2,1] Output: 6 Example 2: Input: height = [4,2,0,3,2,5] Output: 9 Constraints: * The length of the list is...	<think> Okay, I need to solve this problem where I'm given a list of non-negative integers representing the height of each section, and I have to compute how much water can be trapped after filling it. Hmm, I remember that there's a classic algorithm for this, but I should think through it carefully. So, the problem i...	[ { "from": "human", "value": "Given a list of non-negative integers representing the amount of rainwater trapped at different sections, compute how much water can be trapped after filling it.\n\nExample 1:\nInput: height = [0,1,0,2,1,0,1,3,2,1,2,1]\nOutput: 6\n\nExample 2:\nInput: height = [4,2,0,3,2,5]\nOut...
Amber has a collection of n unique stamps, and she wants to display them in a special way. The stamps can be arranged in a straight line, and every stamp has a special property: a value that represents how 'beautiful' it is. She wants to maximize the beauty of visible stamps. However, Amber also wants to ensure no stam...	<think> Okay, so I've got this problem to solve. Let me read through it carefully. Amber has these n unique stamps, each with a beauty value. She wants to arrange them in a straight line so that no stamp overshadows another. A stamp overshadows another if its beauty is greater than or equal to the following stamps. S...	[ { "from": "human", "value": "Amber has a collection of n unique stamps, and she wants to display them in a special way. The stamps can be arranged in a straight line, and every stamp has a special property: a value that represents how 'beautiful' it is. She wants to maximize the beauty of visible stamps. Ho...
Given an integer N, write a function to return the N'th term of the Fibonacci series. The Fibonacci sequence is defined as: Fib(0) = 0, Fib(1) = 1, and Fib(N) = Fib(N-1) + Fib(N-2) for N >= 2. Example 1: Input: N = 5 Output: 5 Explanation: The first six terms of the Fibonacci series are 0, 1, 1, 2, 3, 5. Hence, the 5t...	<think> Okay, I need to write a Python function called fibonacci that returns the Nth term of the Fibonacci series. Hmm, first I should understand the problem properly. The Fibonacci sequence is defined with Fib(0) = 0, Fib(1) = 1, and for N >=2, each term is the sum of the two previous terms. So the sequence starts ...	[ { "from": "human", "value": "Given an integer N, write a function to return the N'th term of the Fibonacci series. The Fibonacci sequence is defined as:\nFib(0) = 0,\nFib(1) = 1,\nand Fib(N) = Fib(N-1) + Fib(N-2) for N >= 2.\n\nExample 1:\nInput:\nN = 5\nOutput:\n5\nExplanation:\nThe first six terms of the ...
In a certain kingdom, the king's palace is connected to various towns by a series of roads. There are n towns, and each town is connected to at least one other town via a direct bidirectional road. The towns and roads form a connected undirected graph. The king wants to know the smallest number of roads he needs to bl...	<think> Okay, I have this programming problem to solve. Let's try to figure it out step by step. So the problem is about finding the minimum number of roads to block in a kingdom's road network to split it into two disconnected parts. The roads form a tree, because the input has exactly n-1 edges and is connected. So ...	[ { "from": "human", "value": "In a certain kingdom, the king's palace is connected to various towns by a series of roads. There are n towns, and each town is connected to at least one other town via a direct bidirectional road. The towns and roads form a connected undirected graph.\n\nThe king wants to know ...