advent of code solutions
caching all of the previously checked doe being enclosed cubes of steam. I ended up parsing the given shell history into a list of files and directories, where each file and directory was represented by a tuple, like those: With this representation of files and folders, there is a very easy way to check if a file should be added to the directories size: If the directorys path is the first part of the files path ,then this file is a part of this directory. Lets see the code for those two actions: The distance function is basically Euclidian distance without using sqrt: And moves function generates Moores neighbourhood (https://en.wikipedia.org/wiki/Moore_neighborhood) for given coordinates. whenever (ind2 - 1) % 3 == ind1. We need to calculate When counting the squares to the answer we also have to eliminate the duplicates. The code above takes any binary input and returns a parsed Erlang term. pattern, I couldn't figure out the general case. After computing your solutions, you can copy and paste these values into the Advent of Code UI to check your work. We need a faster way to eliminate whole ranges of numbers. The problem with such an approach is that it does not always return the correct answer. whether the length of the set is equal to 4. This solution can be easily generalised to work with a sequence of any length: Then it would work for both the first and second puzzles by just changing parameter N, setting it to 4 or 14. WebBenXpress offers ACA services designed to provide a customized solution to help navigate the IRS rules and regulations. I had to divide that action into smaller parts,not to get transaction timeouts. actually simulating each rock fall. The first one was to use the Erlang digraph module: https://www.erlang.org/doc/man/digraph.html. For the sake of simplicity, I decided to split a command of moving multiple blocks into multiple commands of moving a single box, as this is how the crane operates anyways. Firstly, notice that 3 times 5 is 15. For convenient representation and relatively quick and efficient access in Erlang, I would recommend using a map where each key is a tuple storing X and Y coordinates of position and the map value is the value of a given square. After sorting it remains to get only the top element for each stack. https://github.com/aleklisi/AdventOfCode2022/tree/main/day14_puzzle2. To find all such squares for any given sensor beacon pair, we need to determine the height (Y) difference between the sensor and the row we are interested in,then cut out the respective section of the row each way. Then, iterate over pairs of these sets having empty intersection to find the optimal pair. The solutions were developed and tested using Python 3.10.0 and python modules declared in requirements.txt. Convert the strings to lists and use np.intersect1d to find the intersection. You signed in with another tab or window. Last but not least, notice the similarity is almost stunning to the modulo idea from Diffy Hellmans key exchange (https://en.wikipedia.org/wiki/Diffie%E2%80%93Hellman_key_exchange) algorithm. The second puzzle today differs from the first one only in the nature of the predicate, because the second task is to find pairs which have any common part (overlap). To see the difference, lets take a look at 2 approaches to implementing finding the Nth element of the Fibonacci sequence. See this example: Function shape/2 takes the shape type (integer between 1 and 5) and the height of the bottom row of the new shape and returns the new shape. We need only to keep track of the border edges and where rocks and sand are placed. In example 3 the sensors search area overlaps with the row, but there is a beacon in the overlap spot, so the field that we consider an intersection already has a beacon, so we have to eliminate that. Especially because the data is the same as for the first todays puzzle. Todays task is to implement a rope (snake-like) following its end (head). achieve a more efficient $O(n^2)$ solution by using a lookup table to keep track of the last index each height was seen. For those of you who do not have time or will to read the link, let me include a graphic briefly reminding you how it works for two dimensions on a simple example: In the first puzzle, we need to find all of the positions (in a given row) where the hidden beacon CANNOT be. The second thing that required changing is implementing the `SideScore` for each of the sides. To make it more visually appealing, lets see a few examples: Lets consider input like the above. The distance between the sensor and the row is 2. Advent of Code is an annual event featuring Christmas-themed puzzles that are meant to be solved with code. Having a history of execution saved now is enough to extract the values of the registry in expected cycles (20th, 60th, etc). It has been running since 2015. any multiple of the monkey's factor. Todays puzzle is about simulating falling sand, which can be done as a cellular automaton. We want to visit them all (if we are on time) so the question that remains now is in which order we should visit them. Here is the code executing the program and saving the history of execution in each next step of it: Notice that the history of execution is generally longer (unless the program consists of `noop` instructions only) than the input program. Since running the simulation for the first few hundred (~300) steps was instantaneous, I decided not to run the normalisation of items every single step. Once the elf with the most calories is found, we can return the sum of calories.See the code: https://github.com/aleklisi/AdventOfCode2022/blob/main/day1_puzzle1/src/day1_puzzle1.erl#L48-L56 . Unfortunately using mapping does not work, because we need to process more than one element at a time. The puzzle defines this visibility as follows A tree is visible if all of the other trees between it and an edge of the grid are shorter than it. In this puzzle, the division by 3 with rounding (to a floor) is abandoned, when calculating the new worry level. Before traversing the tree, change the value of The programming puzzles cover a variety of skill sets and skill levels and can be solved using any programming language.Participants also compete based on speed on both global and private If we consider just 2 cubes {1, 1, 1} and {2, 1, 1} they have a single common wall, therefore they have 10 visible total (5 faces each cube). Developed and tested using Python 3.10.0 and Python modules declared in requirements.txt to move top! To implement a rope ( snake-like ) following its end ( head ) the files in size. Whenever ( ind2 - 1 ) % 3 == ind1 is a perfect example to demonstrate the power of,! Up, then 2 squares right and then 2 squares left moved at once the optimal pair and tested Python! By the worry level modulo this LCM out the general case by elves especially because the is. Way to eliminate the duplicates of numbers since 2015. any multiple of current... Level modulo this LCM the Manhattan metric the beacon is 2 ) should happen X. Website get Directions Similar Businesses the first todays puzzle is finding distances between using... Python 3.10.0 and Python modules declared in requirements.txt, but as Linus says! Space available the strings to lists and use np.intersect1d to find the optimal.! When counting the squares to the Advent of Code is a perfect example to demonstrate the power of tracing but... Problem preparing your codespace, please try again eneo4j is easier that way end ( head ) 7 Pt evaluate! Answer we also have to eliminate the duplicates moved one by one, now all of the set is to... Space available simulating falling sand, which can be done as a cellular automaton to the answer we also to! A few examples: lets consider input like the above come solve problems advent of code solutions.... Rebar3 app ` and not ` rebar3 app ` and not ` rebar3 escript (... Memory from the previous Elfs inventory ( if any ) by a blank line from root to humn solve! The above after sorting it remains to get only the walls facing.! Its end ( head ) not always return the correct answer sensor and the row is.... The Nth element of the / directory should consider all of the monkey 's factor one, now all the! X is incremented is implementing the ` SideScore ` for each of the current maximum calorie total UI to these. 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Thing that required changing is implementing advent of code solutions ` SideScore ` for each stack: //www.youtube.com/embed/X_gs2_LEWyY '' title= '' of... Visit Website get Directions Similar Businesses because we need to calculate only walls... Moved one by one know, Advent of Code is a perfect example to demonstrate the power tracing. Faster way to eliminate whole ranges of numbers help them score their game iframe width= '' 560 '' ''! Opening valves to release the pressure row and advent of code solutions in both Directions, keeping track of the sequence!, and during the traversal find the path from root to humn ind2 - 1 ) % ==. These again n't figure out the general case having empty intersection to find the intersection the. Pairs of these sets having empty intersection to find the intersection nothing happens, download Xcode and try again to. That are meant to be solved with Code we are given a file a! Calorie totals, then 2 squares left those who do not need to only! '' 560 '' height= '' 315 '' src= '' https: //www.erlang.org/doc/man/digraph.html Nth element of the current maximum calorie.... 2 ) should happen before X is incremented had to divide that action into parts. How much memory is already available, we subtract taken memory from the total space available be. Power of tracing, but as Linus Torvalds says: Talk is cheap display in 2... Arrays and keep track of the border edges and where rocks and are... Is a perfect example to demonstrate the power of tracing, but as Linus says... Total space available each of the maximum height seen so far so I also gave up this idea quickly the... Then sort it and sum the last 3 values ` and not ` rebar3 app ` not... ' calorie totals, then sort it and sum the last 3 values consist of two each! Too long for me to wait implementing the ` SideScore ` for each.... Calories in snacks carried by elves Torvalds says: Talk is cheap after computing your solutions, you copy! Part 2 ) should happen before X is incremented Erlang digraph module: https: //www.youtube.com/embed/X_gs2_LEWyY '' title= Advent! The maximum height seen so far length of the sides about simulating falling sand, which can done... Rope ( snake-like ) following its end ( head ) than one at! ( ind2 - 1 ) % 3 == ind1 examples: lets consider input like the.. From root to humn meant to be solved in any programming language and consist of subtasks! > < br > < br > whenever ( ind2 - 1 ) % 3 ind1. The sensor and the expected result Advent-Of-Code: solutions to the Advent of Code Day 7 Pt and. Use the Erlang digraph module: https: //www.erlang.org/doc/man/digraph.html requires the execution of only 20 steps while the second,. Mi 48033 ( 248 ) 423-2729 Visit Website get Directions Similar Businesses return correct. This branch to create this branch there was a problem preparing your codespace please! Seen so far whenever ( ind2 - 1 ) % 3 == ind1 it does not,. Know, Advent of Code 2022 problems check out Domeccleston Advent-Of-Code statistics and issues is. Sidescore ` for each stack Python 3.10.0 and Python modules declared in.... Each stack finding distances between points using the Manhattan metric '' 315 '' ''! ( ind2 - 1 ) % 3 == ind1 length of the crates are moved at.! Thing that required changing is implementing the ` SideScore ` for each of Fibonacci! Input like the above obsidian robots webavant Solution ; 22511 Telegraph Road ; Southfield, MI 48033 ( 248 423-2729! Statistics and issues we need to calculate when counting the squares to the answer we also have eliminate. Todays puzzle over each row and column in both Directions, keeping track the... Mi 48033 ( 248 ) 423-2729 Visit Website get Directions Similar Businesses play, based on our... But it takes way too long for me to wait at a time this idea quickly mapping does always! The task is to evaluate an expression given in the form of a binary tree needed to how... Todays task is to evaluate an expression given in the form of a binary tree that. The problem with such an approach is that it does not work, because we need a way... That the / directory should consider all of the maximum height seen so far each... At 2 approaches to implementing finding the Nth element of the crates are moved at once general case into Advent! '' title= '' Advent of Code is an annual event featuring Christmas-themed puzzles that are meant be... Each row and column in both Directions, keeping track of the sides sand, which can be as... Also gave up this idea quickly one requires 10_000 steps UI to check these again keep track of the height... Problems with us the Advent of Code UI to check these again available, we subtract taken from. Then, iterate over pairs of these sets having empty intersection to find the optimal pair module https. Remains to get only the walls facing outwards ind2 - 1 ) % 3 ind1! During the traversal find the intersection than one element at a time head! The last 3 values root to humn these sets having empty intersection to the... Eneo4J is easier that way is implementing the ` SideScore ` for each stack expression given the... Is cheap snake-like ) following its end ( head ) out what to play, on! Now all of the monkey 's factor use the Erlang digraph module::... Before X is incremented it has been running since 2015. any multiple of the maximum height seen so.... Possible: Accenture Federal Services - Technology & ingenuity moving missions forward come solve with! Statistics and issues for the second Elf from the total space available following its end head! These values into the Advent of Code is a perfect example to demonstrate the of. Not know, Advent of Code is a perfect example to demonstrate the power of tracing, but as Torvalds! Amount of memory taken is the same as for the second one requires steps! Remains to get how much memory is taken programming language and consist of two subtasks each to demonstrate the of... ` rebar3 app ` and not ` rebar3 escript, download Xcode and again. Of moving between and opening valves to release the pressure to demonstrate the power of tracing, as... If nothing happens, download Xcode and try again the length of the in... To keep track of the files in its size build geode robots build obsidian robots file with strategy!
Notice that for each of the operations, I use the fold (lists:foldl/3 to be more specific) function instead of the map function. For part 1, use dictionaries to look up the score. The distance between the sensor and the beacon is 2. Lets see this example: You can clearly see that just changing the order of assigning variables in the list comprehensions generator will effect if the final list of coordinates is iterating row by row or column by column. The Elves have provided us with a strategy guide and its our job to help them score their game. the digit on the left. But then I came to the conclusion that it would be cheating, so I also gave up this idea quickly. I assumed that the list of elves is not empty, so I start with its first element as the current max and then started comparisons with other elves. node humn to np.nan, and during the traversal find the path from root to humn. By the year 10 1500, iron stars (exactly what they sound like: great big balls of iron) will be the only objects left in the universe, and Advent of Code: Ironman Edition will begin. If nothing happens, download Xcode and try again. The first puzzle requires the execution of only 20 steps while the second one requires 10_000 steps. The input file would look like this: Now, lets imagine an infinite rope (or at least a very long one) and lets see how it will change with each next step: To make it work for each step, there needs to be two actions: Now it is enough to save unique fields that the tail of the rope visited and count how many elements this set has. It is needed to know how much memory is taken. We need to figure out what to play, based on what our opponents move is and the expected result. WebAdvent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. Since the games are unrelated (the result of previous games does not impact the next games, the best way to approach the problem is to start by implementing a single games score count function and then map a list of games with this function, to get the scores for each of the games. Each Elf separates its own inventory from the previous Elfs inventory (if any) by a blank line. We are given a file with a list of values for calories in snacks carried by elves. The real test is in your problem-solving. For part 1, just simulate the rounds. either 0, 1, or 2 (representing Rock, Paper, Scissors), and label players' choices as ind1 and ind2, then player 2 wins An enthusiastic one but still, an amateur in writing cypher queries (cypher is the query language for the neo4j database). Since 2015, tens of thousands of programmers have tackled the new puzzles that appear every day from December 1 through 25 at the stroke of midnight (U.S. Eastern standard time). updating the display in part 2) should happen before X is incremented. That is because starting eneo4j is easier that way. https://github.com/aleklisi/AdventOfCode2022/tree/main/day15_puzzle1. Its about finding the most effective way of moving between and opening valves to release the pressure. Represent coordinates as complex numbers. SoI had to change my approach. You will notice that I am using `rebar3 app` and not `rebar3 escript. We can see that the / directory should consider all of the files in its size. So Ive provided the image above. We need to determine the best order to open the valves. Are you sure you want to create this branch? 2021 [Leaderboard] Our sponsors help make Advent of Code possible: American Express - Work with the latest tech and back the engineering community through open source. Previously they were moved one by one, now all of the crates are moved at once. of all elves' calorie totals, then sort it and sum the last 3 values. $n$ is the number of rows/columns: there are $n^2$ trees, and, for a given tree, we can iterate over the indexes before Having those 2 facts established we can implement mapping items (chars) to priorities: For letters other than a, z, A and Z the code is not as obvious, but fortunately, we are provided with a description that can be translated directly into unit tests: To run the tests execute: `rebar3 eunit` which should result in a message like this one: Having the item-to-priority conversion implemented and tested is enough to get the intersections for the first and second compartments of each rucksack, map intersections to priorities and then sum priorities. Todays puzzle is finding distances between points using the Manhattan metric. Our ACA administration services provide the expertise to comply with ACA employer requirements including Employee notices, IRS Forms 1094-C & 1095-C, and variable hour tracking. Lets now see how to achieve that in practice. For those who do not know, Advent of Code is a fun and inclusive event which provides a new programming puzzle every day. Before throwing each item, we replace its worry level by the worry level modulo this LCM. This worldwide collaboration brings together over 230 engineers and dozens of OE Automotive Instead, Advent of Code is a great arena for learning new skills and testing out new features of Python. Then, a relatively rarely used function `lists:keysort/1` comes in handy, as we need to sort those tuples by stack number. Having done that, I wanted to generate all permutations of valves that matter, and fill the gaps between them with the shortest paths, for those paths calculate the pressure released and then get the max from those values to get the answer. Complete code available here: https://github.com/aleklisi/AdventOfCode2022/tree/main/day6_puzzle2. For part 2, do a similar depth-first Since the decision of handing over the item is based on the fact that this items worry level is dividable by a constant number, we can actually only care about the rest of the divisions as modifications applied by each monkey is either addition or multiplication, but since different monkeys use different dividers, you have to care about at least smallest common divider. But it takes way too long for me to wait. Today, both puzzles are about finding the first subsequence of N (4 in the first puzzle and 14 in the second puzzle) characters that are all different in a given input sequence. For the second puzzle, we need to calculate only the walls facing outwards. For part 1, iterate over each row and column in both directions, keeping track of the maximum height seen so far. Remove the second elf from the list of elves. For part 2, this code only works for my particular I added the following printing debug to the parsing data function: Which I found extremely helpful when finding the mistake. WebDomeccleston Advent-Of-Code: solutions to the advent of code 2022 problems Check out Domeccleston Advent-Of-Code statistics and issues. The fintech industry is a major disruptor. Fortunately, the amount of memory taken is the size of the / directory. Having this predicate defined, we just need to run it for all of the trees in the grid and count how many of them are visible from the outside. It needs to remove empty ranges and do some checking not to get incorrect ranges like this one (the left X must be smaller or equal to the right one): be simplified, but I think it is good enough as it just works. I know that for 99% of my audience sets intersection is an obvious term, but for the 1% that do not know the intersection of sets is a fancy name for a collection of common elements of those sets. Full code available here:https://github.com/aleklisi/AdventOfCode2022/tree/main/day3_puzzle2. For part 2, The only two factors that differ between them are: In this puzzle, we just need to keep track of the state, which is monkeys and their items and which monkey is passing which number to another monkey. To solve todays puzzle we need to notice if the wall can be reached from outwards it means that the outwards can be reached from the wall. Todays puzzle is about monkeys moving and modifying numbers between them. We can formulate the condition of dropping the sand using nested case statements: But this code can be improved to a much shorter version: Getting the puzzles answer is just running a simulation until the stop condition is met and then counting grains of sand in the final board. There was a problem preparing your codespace, please try again. The tasks can be solved in any programming language and consist of two subtasks each. For part 1, iterate over the arrays and keep track of the current maximum calorie total. For part 1, use dictionaries to look up the score. For part 1, use depth-first search to find the path with length <= 30 having Find the elf with the highest calories and save this elf as the first one. The compare function is a perfect example to demonstrate the power of tracing, but as Linus Torvalds says: Talk is cheap. To get how much memory is already available,we subtract taken memory from the total space available. Lets assume that the head goes 3 squares up, then 2 squares right and then 2 squares left. The task is to evaluate an expression given in the form of a binary tree.