2023 Day 03 Part 1, Part 2 faulty (working with sample, not with actual input data)
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2023/03/README.md
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2023/03/README.md
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# 2023 Day 03: Gear Ratios
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Copyright (c) Eric Wastl
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#### [Direct Link](https://adventofcode.com/2023/day/3)
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## Part 1
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You and the Elf eventually reach a [gondola lift](https://en.wikipedia.org/wiki/Gondola_lift) station; he says the gondola lift will take you up to the **water source**, but this is as far as he can bring you. You go inside.
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It doesn't take long to find the gondolas, but there seems to be a problem: they're not moving.
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"Aaah!"
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You turn around to see a slightly-greasy Elf with a wrench and a look of surprise. "Sorry, I wasn't expecting anyone! The gondola lift isn't working right now; it'll still be a while before I can fix it." You offer to help.
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The engineer explains that an engine part seems to be missing from the engine, but nobody can figure out which one. If you can **add up all the part numbers** in the engine schematic, it should be easy to work out which part is missing.
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The engine schematic (your puzzle input) consists of a visual representation of the engine. There are lots of numbers and symbols you don't really understand, but apparently **any number adjacent to a symbol**, even diagonally, is a "part number" and should be included in your sum. (Periods (`.`) do not count as a symbol.)
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Here is an example engine schematic:
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```
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467..114..
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...*......
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..35..633.
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......#...
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617*......
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.....+.58.
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..592.....
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......755.
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...$.*....
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.664.598..
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```
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In this schematic, two numbers are **not** part numbers because they are not adjacent to a symbol: `114` (top right) and `58` (middle right). Every other number is adjacent to a symbol and so **is** a part number; their sum is **`4361`**.
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Of course, the actual engine schematic is much larger. **What is the sum of all of the part numbers in the engine schematic?**
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## Part 2
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The engineer finds the missing part and installs it in the engine! As the engine springs to life, you jump in the closest gondola, finally ready to ascend to the water source.
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You don't seem to be going very fast, though. Maybe something is still wrong? Fortunately, the gondola has a phone labeled "help", so you pick it up and the engineer answers.
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Before you can explain the situation, she suggests that you look out the window. There stands the engineer, holding a phone in one hand and waving with the other. You're going so slowly that you haven't even left the station. You exit the gondola.
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The missing part wasn't the only issue - one of the gears in the engine is wrong. A **gear** is any `*` symbol that is adjacent to **exactly two part numbers**. Its **gear ratio** is the result of multiplying those two numbers together.
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This time, you need to find the gear ratio of every gear and add them all up so that the engineer can figure out which gear needs to be replaced.
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Consider the same engine schematic again:
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```
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467..114..
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...*......
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..35..633.
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......#...
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617*......
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.....+.58.
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..592.....
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......755.
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...$.*....
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.664.598..
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```
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In this schematic, there are **two** gears. The first is in the top left; it has part numbers `467` and `35`, so its gear ratio is `16345`. The second gear is in the lower right; its gear ratio is `451490`. (The `*` adjacent to `617` is **not** a gear because it is only adjacent to one part number.) Adding up all of the gear ratios produces **`467835`**.
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**What is the sum of all of the gear ratios in your engine schematic?**
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91
2023/03/code.py
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2023/03/code.py
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# SPDX-License-Identifier: MIT
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# Copyright (c) 2023 Akumatic
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#
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# https://adventofcode.com/2023/day/3
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def read_file(filename: str = "input.txt") -> list:
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with open(f"{__file__.rstrip('code.py')}{filename}", "r") as f:
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return f.read().strip().split("\n")
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def check_surrounding_fields(vals: list, x: int, y: int) -> bool:
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return any(
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vals[y + j][x + i] != "." and not vals[y + j][x + i].isdigit()
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for i in range(-1, 2) for j in range(-1, 2)
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if 0 <= x + i < len(vals[0]) and 0 <= y + j < len(vals)
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)
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def sum_part_numbers(vals: list) -> int:
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num_sum = 0
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for y in range(len(vals)):
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valid = False
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num = 0
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for x in range(len(vals[0])):
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if not vals[y][x].isdigit():
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if valid:
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num_sum += num
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valid = False
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num = 0
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continue
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num = num * 10 + int(vals[y][x])
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if not valid:
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valid = check_surrounding_fields(vals, x, y)
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if valid:
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num_sum += num
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return num_sum
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def find_possible_gears(vals: list) -> list:
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positions = list()
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for y in range(len(vals)):
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positions.extend([(x, y) for x, char in enumerate(vals[y]) if vals[y][x] == "*"])
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return positions
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def check_left_of_symbol(vals: list, x, y) -> int:
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if not 0 <= y < len(vals):
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return -1
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i, num = 1, 0
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check = False
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while (x - i) >= 0 and vals[y][x - i].isdigit():
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check = True
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num += int(vals[y][x - i]) * 10**(i - 1)
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i += 1
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return num if check else -1
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def check_right_of_symbol(vals:list, x, y) -> int:
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if not 0 <= y < len(vals):
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return -1
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i, num = 1, 0
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check = False
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while (x + i) < len(vals[y]) and vals[y][x + i].isdigit():
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check = True
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num = num * 10 + int(vals[y][x + i])
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i += 1
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return num if check else -1
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def determine_gear_ratios(vals: list, possible_gears: list) -> list:
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result = list()
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for x, y in possible_gears:
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part_numbers = list()
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for j in (-1, 0, 1):
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tmp_l = check_left_of_symbol(vals, x, y + j)
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tmp_r = check_right_of_symbol(vals, x, y + j)
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tmp_m = vals[y + j][x] if 0 <= y + j < len(vals) and vals[y + j][x].isdigit() else None
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if tmp_m is not None:
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nums = [int("".join([str(x) for x in (tmp_l, tmp_m, tmp_r) if x != -1]))]
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else:
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nums = [x for x in (tmp_l, tmp_r) if x != -1]
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part_numbers.extend(nums)
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if len(part_numbers) == 2:
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result.append(part_numbers[0] * part_numbers[1])
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return result
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def part1(vals: list) -> int:
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return sum_part_numbers(vals)
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def part2(vals: list) -> int:
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possible_gears = find_possible_gears(vals)
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return sum(determine_gear_ratios(vals, possible_gears))
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if __name__ == "__main__":
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vals = read_file()
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print(f"Part 1: {part1(vals)}")
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print(f"Part 2: {part2(vals)}")
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140
2023/03/input.txt
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140
2023/03/input.txt
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@ -0,0 +1,140 @@
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..975..95..................717..........................................747................................................622..............
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................/47...........@....701...610.........252.660*.............*..236.....323..........108........653............................
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.......69............313..............$...$...*....@.........640........81.....*................................*332..92....................
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........................*...210.............767...912...367.......505.......817..................*.........478.........=....223.....568.....
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..76...968............108...@.....556.....................=..........*...............412..313...575......../...........................*107.
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............773/..891............*....................744.....805...14................../..../................320&.567..#...................
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.962..708............&........399....146.....385.................*..........825.......................................-..655....485...-.....
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...*.........+..........................*76...+..................242....997..*......185..........207.390..870...883............*.......337..
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....929...299....................*.................249........-...........*.373.....*.............*.....*.*....*.............549............
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................196.745.996...364..............409...-.926.....273.....580.........31...........545..547...862......810.....................
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................*.......*..............900+....*..........*........586.........936...................................*.........673..........
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.../..........864.683.215....*......%.........702..166..46..........&....341..........694..496.......528.%...........839...105..*...887.....
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....506...617.....*........51.807....942..424...............................*..........@..+............@.84...................*......=......
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...........@....594.........................*..........*675...........345..52...$..................-..............899.........804.$.........
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.362*366.................487+.48&.......600..180....845........................535...18...........397.#908....432*........229......346......
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.................*................835....................578......*502...............*..416.............................................391.
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....610&...514...501......./........*....*71.........../.......674......925...............*.869.....966........393................/.687.*...
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............*...............786...248.104........92.633.....%..............*104...&466..138..@.........*.525...+......974......339..=...260.
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....372/.889..............................55.406........134..250.=228..609...........................69...............*.....................
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...........................................*........976...*...........=.......357...........................191.....150.....................
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...-...........595.634.........*396......592..594......*......411.856...760....../..................201.....#...709................168......
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.936..236.........*....@....436.....100....../......35...../.....*........*....................917%............*.....................*..#63.
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.......*..............542..........................*........689.........26....667.&...................738....831..$.............513.53......
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........10.....529........*250..........162.......390...........................*..70.............................701..........*............
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..355.........&........394......301@..........542..............................142..........%..............%..........*.....507.............
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.....*.........................................*.....%..283.....*.........997&.......@670....402..........808......308.459.......712...152..
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..291......246.@....+986.....336/.......976...468.264...*....739.187.............................................................*.....*....
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........../....46...................186.$..............674............................227......-............975...............436.......492.
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.491........................810.......*........................772*.........742........%....198.....*702.......*.596=....64.......=.........
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...................706......=......415..................=.199......235......*...47........................72.607...................443......
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.214..............*.....771.............302...........230..+..............810.....*219.606........912.....................=.................
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......277......320.............937.....*.....+....632...........&374..............................*....................898.....642%.........
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.........#....................*.......716....229./.........................$................934...233...............98............../.......
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.....*........-659..457.........964...................659....786....619.666........277...@.....*......930*460..618...........910..265.......
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..845.877.343......................*537.../120.......*.......*.....*.................&...175..631.............=.................#...........
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............*....................+................@...35.949..34.381......273...880......................451........326.....................
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............876..880......827..733.......645.......38......*.........402.....+..........902....459.775........837.....*.185.......813.......
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........578................/............*...............622..18.........*234..............+....%..........448.......935....#.............350
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..........*...468.....546................588....146=.........*..142.795..............*424................../.....................=..........
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........245............@...746.......362..................970......*..............593...............487.......+.............709..593........
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...990......&415..............*381......*.....................435.......214..908..................*....*.....351.....876.25....*............
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......*............293*.....%...........271.............135......*......=........540............177....604...........&.....-.46..........166
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...609.....................910.................@........$.......321..........141....+.45.....................750......................98....
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.......#....779........944.....653...........797...........788.................*......+....164.724....475&...+.............-.471......&.....
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..794...487....&..81...........*...................@............666@.....*981.937.............*.....%..........888....+...81................
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.....*...........+......694.............748...104..859..............................675.434.......290.............*..352........353=..$.....
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...619.977.........859..#....235....230*......*..............429........335....-.......*......631.......=.......27...................192....
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.......*............=...........&.........121..680.195.959......*417.....*..938.............../..........739..#..............194.750........
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....309...439.............14...............*..........*...............723.........163..748...........853.....885.........175*........487....
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.............*707..-626..........464.....382................356...........868#....*...*.....13......*............450............#.....*.....
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........216......................*...619......$..270........*.....892............25.494.841*.....971.............*............157.+...119...
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...#40...../............343..559.425.......536........718....739...#.......284...............726.....985..136...597.621.173.......203.......
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................383............/......................*...................@....348............*.....*.......*........./...*...811.......*158
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...=..............$......@....................776.829.85...&........541.......*....*...&....700......341.995.....73......114....*....267....
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.700.203....591.*.....924..........$217.......@.....*.......590....*.........812.579....517.......................*.............730.........
|
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......#......*...586.........312..................806............435...259...........................573........453.282*132.243.............
|
||||
..........224.................#.......468@............-...%.............*..............453...................$.....................-........
|
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....................................................227.673....881......828..&.....632*...................589.....................284..-....
|
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.....680.........871....17+................117.................*.............506..................#...410...................616.........519.
|
||||
........*..386................78*762.........@........28..557.655.......359........-............124..#......&..........843./................
|
||||
......724...*..584.....552............................*...&.................209..857...633-..............602...932......*........132&.......
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..........41../.........*..........................#..427.............=370....*................................*...353...902...........529..
|
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.....................150.......868.......370....549.........779...................284...........431.....3.....889.............189..103.=....
|
||||
.......530..355..........442...*............*63............+.......852.....935.....*..............%.....*..................@....*.-.........
|
||||
..........*...*...976.....*...500....@...........572...........940....*990..*....627.790.................460..904..601-..821..930....699....
|
||||
..........643.824.......248........358...4.........&..301.........&........538.........*.%436....565..........*......................../....
|
||||
.768..$.....................186..........*...178........*.......................*.&520..............%........782..........497.-......*......
|
||||
......762..828*...972......*..............3.*.......................@....../..836...............278..............666......*...927.413.185...
|
||||
....&..........40.......86.122..........&....450....................1....202............42...51....*..............*.....215.................
|
||||
.353.................94*.................995.....655.....520...828....*...........612..........&.119...........486...............713........
|
||||
.........................255........................*.......+.....-..463..........*........235........836....................668............
|
||||
...................................................286........338........=.393....398........*....199./............631..........*631........
|
||||
................64%....704...928.........470...125............*....708.15...*.............193.......*........641....*......687..............
|
||||
........$..............*...................&.....*..........582......*....652.@358..643..........125.....458........168....$.......$194.....
|
||||
........293.........305......417...............117....................612............*......262.............*903............................
|
||||
.....$...................615*..........581.........335...139..505.419.............656.........+.......506................710.....956........
|
||||
776..110.....+............................-........#..........*....*...447......*......................*...*.....938.366*.......#....376....
|
||||
..........366............844....305..761......780......560........236........725.272.....450.............67.126.....................*.......
|
||||
.................669$.......$.......=............*220./.....+665........495................*.@103....992....................&........600....
|
||||
.......*......................812/.........................................$............940...........+...................146...975.........
|
||||
....410.650.282.....*...............696.833....957...............996...*......772.287...................921..935................%.....$.....
|
||||
............*....413.921...713....................%.....769.........@.390.216..#.....@..........................=...........*.......46......
|
||||
.....798.136..............%....150.....236..............*......31...........*..........@.64..17......616..........901......344..............
|
||||
..............................-........*.....402......873.......*......692...592....390...*.............*277................................
|
||||
......539.....799.../.....272....%.@....694.#.............667...318.......=...............762.......71%.......-153......................531.
|
||||
..........556*......573.......465...916...................*..........602.........................=.......145...........................*....
|
||||
........................451.............../....%.....625.401.........*........428-.....493......479.427....$.........60......951......281...
|
||||
..947+....36....270....*............517....521..258.*............108..812.............*................*........................*372........
|
||||
...........*....*....957.823...290.....*.............415..........*...............908..730..........589......+..............................
|
||||
857.........843............*........794......................677..27........................121...........670.........548.837*....&.....664.
|
||||
......175..........-.....=........................422.......*..................226-..344.......*...................2....%..........474......
|
||||
...................283..190..@...........458........*.162@.666.517....202...............*..@...545.%.........705.............*..............
|
||||
...............*............296.466.....#.........................*..*.....852..208...999.475......256..........=....642..188.386...........
|
||||
............504.888..................52....416......394...349.....53.953...*......*...........@521.........213........*.....................
|
||||
......225...............272*32........*.....*..........*...%..............728.........827.513..........287*.........924..388%.........&.....
|
||||
..453...*..................................71.....*..437.......501...869.......928....%...#....................%225.............734@..157...
|
||||
....*..400...........810=.300@...13.15.537.....997........./......*.....*.........+.........407.758...674............604....500.............
|
||||
..970..........409...............*...*...*................159...788....338..............636*...../....#.......#895....*......./.............
|
||||
..................................52.....872........+...........................-........................524.........297............314.....
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||||
...........=...469.....408.............&.........641......364%.780...526.........540.865....742............*..............549..505...*......
|
||||
........404.......*...-....58..%....577...............655......*.............613......*.............343..779./854............*....*...567...
|
||||
...103............284......./...999....................=.....640.....284..............566.982..........$...........476...478.793..556.......
|
||||
......*.....436........916.................941.............@.........&...........284.........*183.........857.953...........................
|
||||
...............*.404=.....*910..703@...20......266......815.....201.....54.332...........................@......*...........95..............
|
||||
.............898........................*........*..........13.....*806...*.......280.........................905........63*................
|
||||
........&.........642..271.627..920.+....534...96..780......@....=...........246../......99........................................../......
|
||||
....$....518.......@......*......*..323..............-............477....*4...*...........*....979......810.................366....697......
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||||
.....439........................364.........161..594.....647..................802.........234..............*17......125..82....*............
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||||
................187....667....................*..#.......*.......*................604..................946.............*....414.............
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||||
....585...218.....*...*.............-....536.396........950...200......296*935...*..........#...382..........883......182.......326....*....
|
||||
.....+......-...557.349...........217............................./105..........527..387....394...*...........#..430*.....501.......393.190.
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||||
.......*474.............16....................675.....999..............362..............*..........576...................*..................
|
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....449.....+.296*468.....................607....*...........-..#.................619....177...............31...........194..198..187.......
|
||||
.........156......................330.......+..332...631...936...477................*...........658..........%..845..........*..............
|
||||
....*262.........$......362......*.....429=..............................*324....296...........+.......161.....*....57.....309..............
|
||||
.403............492..97.@.....695..696......$.840..&.................21.....................@.........*.......178...+....$.............364..
|
||||
......178..692*.....%.....82..........=...176.......456.....517........+...238.704.......682......266.................&..222..........*.....
|
||||
......*........993........*....931*...........445..............*.................=...........@...*.......448.......251................222...
|
||||
.......824............467..232.......664..299*.......322*512..850..............@..........585....259........$..................&............
|
||||
...458.....572.................379....*........123.....................-........298..................-................336...908....*........
|
||||
....&......*....&..732...701/....*....440.....$...........739..636.....65..../.......%151.............823.455............&..........119.....
|
||||
........550....391..%.............259....................#....*............834............232.179............*.........4...795.784..........
|
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.............%...............729...............568.............936...............952........*..*..............726..........*.........-......
|
||||
...627.....87....@...........-...........6.....%...106.......................458*.....281..811..282..500..............=....833....214..780..
|
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..............320................665..............*........584.........................*............................343...............*.....
|
||||
..................997....84.590.....*795.90*487.842..%431....*.......233..692....259....391.113*........*338............./..391.............
|
||||
.....62.....#689.*.........*.................................444.......*...*......*.............445..861...........498/.857..*.....505*.....
|
||||
......*...........436.869.....634@..663...599..901*678.100..........666....301..493.986....174.............838*492..........454........313..
|
||||
.....362.....983....../................+..*.............=.............................*....*.......259.............+....464.........27......
|
||||
...%........................580....68.....45.........................................21..768...267....*.+....661..879..@....&......$........
|
||||
.643....545......./435.....*.........+.............................823....919.......................20..102.*..............267.690.....55...
|
||||
.........*...............557....247.......653....584.5*....430....*........../...529+...........856..........305.254..212.............*.....
|
||||
........945...528................/...775..+............204...-.537....$..528................276*...................%....*....863......612...
|
||||
....572.......*.........614.........+................................810...............842........438.....26...&.....%.........*............
|
||||
.......*....201.@......*....671..$........................../.............................*...832*.......*....214.899..........795.421+.....
|
||||
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|
||||
.....................................424.......%...............@.......228.....+..............+.......................$.....................
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||||
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|
||||
.............*....%..................963*...........96...287.255.*...548.........534....*.............*..........896..531.789.=.......855...
|
||||
...........579....595...........8................................781...............................547......................................
|
||||
2
2023/03/solution.txt
Normal file
2
2023/03/solution.txt
Normal file
@ -0,0 +1,2 @@
|
||||
Part 1: 520019
|
||||
Part 2: 73239378
|
||||
14
2023/03/test_code.py
Normal file
14
2023/03/test_code.py
Normal file
@ -0,0 +1,14 @@
|
||||
# SPDX-License-Identifier: MIT
|
||||
# Copyright (c) 2023 Akumatic
|
||||
|
||||
from code import read_file, part1, part2
|
||||
|
||||
def test():
|
||||
vals = read_file("test_input.txt")
|
||||
assert part1(vals) == 4361
|
||||
print("Passed Part 1")
|
||||
assert part2(vals) == 467835
|
||||
print("Passed Part 2")
|
||||
|
||||
if __name__ == "__main__":
|
||||
test()
|
||||
10
2023/03/test_input.txt
Normal file
10
2023/03/test_input.txt
Normal file
@ -0,0 +1,10 @@
|
||||
467..114..
|
||||
...*......
|
||||
..35..633.
|
||||
......#...
|
||||
617*......
|
||||
.....+.58.
|
||||
..592.....
|
||||
......755.
|
||||
...$.*....
|
||||
.664.598..
|
||||
@ -16,7 +16,7 @@ Collect stars by solving puzzles. Two puzzles will be made available on each day
|
||||
| --- | --- | --- |---| --- |
|
||||
| 01 | :white_check_mark: | :white_check_mark: | [Solution](01/code.py) | [Day 01](https://adventofcode.com/2023/day/1) |
|
||||
| 02 | :white_check_mark: | :white_check_mark: | [Solution](02/code.py) | [Day 02](https://adventofcode.com/2023/day/2) |
|
||||
| 03 | | | | [Day 03](https://adventofcode.com/2023/day/3) |
|
||||
| 03 | :white_check_mark: | :x: | [Solution](03/code.py) | [Day 03](https://adventofcode.com/2023/day/3) |
|
||||
| 04 | | | | [Day 04](https://adventofcode.com/2023/day/4) |
|
||||
| 05 | | | | [Day 05](https://adventofcode.com/2023/day/5) |
|
||||
| 06 | | | | [Day 06](https://adventofcode.com/2023/day/6) |
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user