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day 14 part 1 solution

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Andrew Coleman 2022-12-18 14:34:36 -05:00
parent f88eeb1f91
commit bbe7c7332f
5 changed files with 310 additions and 0 deletions
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124
2022/day14.txt Normal file
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@ -0,0 +1,124 @@
495,144 -> 499,144
492,40 -> 492,43 -> 484,43 -> 484,50 -> 499,50 -> 499,43 -> 496,43 -> 496,40
499,13 -> 499,17 -> 497,17 -> 497,25 -> 505,25 -> 505,17 -> 502,17 -> 502,13
504,141 -> 508,141
498,135 -> 502,135
499,13 -> 499,17 -> 497,17 -> 497,25 -> 505,25 -> 505,17 -> 502,17 -> 502,13
511,101 -> 511,96 -> 511,101 -> 513,101 -> 513,93 -> 513,101 -> 515,101 -> 515,94 -> 515,101
485,147 -> 490,147
483,153 -> 488,153
479,151 -> 484,151
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
510,141 -> 514,141
498,53 -> 498,57 -> 495,57 -> 495,64 -> 508,64 -> 508,57 -> 502,57 -> 502,53
511,101 -> 511,96 -> 511,101 -> 513,101 -> 513,93 -> 513,101 -> 515,101 -> 515,94 -> 515,101
513,114 -> 513,110 -> 513,114 -> 515,114 -> 515,110 -> 515,114 -> 517,114 -> 517,107 -> 517,114
476,153 -> 481,153
506,83 -> 506,85 -> 503,85 -> 503,88 -> 513,88 -> 513,85 -> 511,85 -> 511,83
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
506,83 -> 506,85 -> 503,85 -> 503,88 -> 513,88 -> 513,85 -> 511,85 -> 511,83
515,165 -> 520,165
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
508,165 -> 513,165
494,155 -> 499,155
506,83 -> 506,85 -> 503,85 -> 503,88 -> 513,88 -> 513,85 -> 511,85 -> 511,83
487,30 -> 487,31 -> 499,31 -> 499,30
497,129 -> 502,129
473,155 -> 478,155
517,123 -> 522,123
511,101 -> 511,96 -> 511,101 -> 513,101 -> 513,93 -> 513,101 -> 515,101 -> 515,94 -> 515,101
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
506,83 -> 506,85 -> 503,85 -> 503,88 -> 513,88 -> 513,85 -> 511,85 -> 511,83
489,149 -> 494,149
507,126 -> 512,126
489,144 -> 493,144
506,83 -> 506,85 -> 503,85 -> 503,88 -> 513,88 -> 513,85 -> 511,85 -> 511,83
513,114 -> 513,110 -> 513,114 -> 515,114 -> 515,110 -> 515,114 -> 517,114 -> 517,107 -> 517,114
486,151 -> 491,151
498,53 -> 498,57 -> 495,57 -> 495,64 -> 508,64 -> 508,57 -> 502,57 -> 502,53
521,126 -> 526,126
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
487,155 -> 492,155
513,120 -> 518,120
499,13 -> 499,17 -> 497,17 -> 497,25 -> 505,25 -> 505,17 -> 502,17 -> 502,13
482,149 -> 487,149
500,158 -> 500,159 -> 513,159
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
499,13 -> 499,17 -> 497,17 -> 497,25 -> 505,25 -> 505,17 -> 502,17 -> 502,13
492,40 -> 492,43 -> 484,43 -> 484,50 -> 499,50 -> 499,43 -> 496,43 -> 496,40
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
513,114 -> 513,110 -> 513,114 -> 515,114 -> 515,110 -> 515,114 -> 517,114 -> 517,107 -> 517,114
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
499,13 -> 499,17 -> 497,17 -> 497,25 -> 505,25 -> 505,17 -> 502,17 -> 502,13
505,168 -> 510,168
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
492,40 -> 492,43 -> 484,43 -> 484,50 -> 499,50 -> 499,43 -> 496,43 -> 496,40
513,114 -> 513,110 -> 513,114 -> 515,114 -> 515,110 -> 515,114 -> 517,114 -> 517,107 -> 517,114
509,117 -> 514,117
498,53 -> 498,57 -> 495,57 -> 495,64 -> 508,64 -> 508,57 -> 502,57 -> 502,53
511,101 -> 511,96 -> 511,101 -> 513,101 -> 513,93 -> 513,101 -> 515,101 -> 515,94 -> 515,101
498,53 -> 498,57 -> 495,57 -> 495,64 -> 508,64 -> 508,57 -> 502,57 -> 502,53
503,123 -> 508,123
511,101 -> 511,96 -> 511,101 -> 513,101 -> 513,93 -> 513,101 -> 515,101 -> 515,94 -> 515,101
513,114 -> 513,110 -> 513,114 -> 515,114 -> 515,110 -> 515,114 -> 517,114 -> 517,107 -> 517,114
498,53 -> 498,57 -> 495,57 -> 495,64 -> 508,64 -> 508,57 -> 502,57 -> 502,53
510,123 -> 515,123
511,101 -> 511,96 -> 511,101 -> 513,101 -> 513,93 -> 513,101 -> 515,101 -> 515,94 -> 515,101
513,144 -> 517,144
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
501,138 -> 505,138
507,144 -> 511,144
513,114 -> 513,110 -> 513,114 -> 515,114 -> 515,110 -> 515,114 -> 517,114 -> 517,107 -> 517,114
498,53 -> 498,57 -> 495,57 -> 495,64 -> 508,64 -> 508,57 -> 502,57 -> 502,53
492,40 -> 492,43 -> 484,43 -> 484,50 -> 499,50 -> 499,43 -> 496,43 -> 496,40
492,141 -> 496,141
495,138 -> 499,138
513,114 -> 513,110 -> 513,114 -> 515,114 -> 515,110 -> 515,114 -> 517,114 -> 517,107 -> 517,114
492,40 -> 492,43 -> 484,43 -> 484,50 -> 499,50 -> 499,43 -> 496,43 -> 496,40
498,141 -> 502,141
501,155 -> 506,155
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
497,153 -> 502,153
504,129 -> 509,129
518,129 -> 523,129
480,155 -> 485,155
513,114 -> 513,110 -> 513,114 -> 515,114 -> 515,110 -> 515,114 -> 517,114 -> 517,107 -> 517,114
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
506,83 -> 506,85 -> 503,85 -> 503,88 -> 513,88 -> 513,85 -> 511,85 -> 511,83
498,53 -> 498,57 -> 495,57 -> 495,64 -> 508,64 -> 508,57 -> 502,57 -> 502,53
492,40 -> 492,43 -> 484,43 -> 484,50 -> 499,50 -> 499,43 -> 496,43 -> 496,40
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
525,129 -> 530,129
504,135 -> 508,135
487,30 -> 487,31 -> 499,31 -> 499,30
487,30 -> 487,31 -> 499,31 -> 499,30
493,151 -> 498,151
514,126 -> 519,126
511,101 -> 511,96 -> 511,101 -> 513,101 -> 513,93 -> 513,101 -> 515,101 -> 515,94 -> 515,101
507,138 -> 511,138
495,37 -> 506,37
511,101 -> 511,96 -> 511,101 -> 513,101 -> 513,93 -> 513,101 -> 515,101 -> 515,94 -> 515,101
500,126 -> 505,126
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
519,168 -> 524,168
511,162 -> 516,162
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
499,13 -> 499,17 -> 497,17 -> 497,25 -> 505,25 -> 505,17 -> 502,17 -> 502,13
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
492,40 -> 492,43 -> 484,43 -> 484,50 -> 499,50 -> 499,43 -> 496,43 -> 496,40
506,120 -> 511,120
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
501,132 -> 505,132
511,129 -> 516,129
494,80 -> 507,80
506,83 -> 506,85 -> 503,85 -> 503,88 -> 513,88 -> 513,85 -> 511,85 -> 511,83
501,144 -> 505,144
490,153 -> 495,153
512,168 -> 517,168
490,77 -> 490,68 -> 490,77 -> 492,77 -> 492,75 -> 492,77 -> 494,77 -> 494,74 -> 494,77 -> 496,77 -> 496,72 -> 496,77
507,181 -> 507,171 -> 507,181 -> 509,181 -> 509,173 -> 509,181 -> 511,181 -> 511,176 -> 511,181 -> 513,181 -> 513,176 -> 513,181
499,13 -> 499,17 -> 497,17 -> 497,25 -> 505,25 -> 505,17 -> 502,17 -> 502,13
500,158 -> 500,159 -> 513,159

180
2022/src/days/day14.rs Normal file
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@ -0,0 +1,180 @@
use anyhow::{anyhow, Result};
use std::fs;
#[derive(Clone, Copy)]
enum Tile {
Air,
Rock,
Source,
Sand,
}
type Cave = [[Tile; 540]; 200];
pub fn run() -> Result<()> {
#[cfg(not(feature = "test_input"))]
let file_contents = fs::read_to_string("day14.txt")?;
#[cfg(feature = "test_input")]
let file_contents = fs::read_to_string("tests/day14.txt")?;
let mut cave: Cave = [[Tile::Air; 540]; 200];
cave[0][500] = Tile::Source;
let mut minx = 520;
let mut maxx = 500;
let mut maxy = 0;
for line in file_contents.lines() {
let mut lastx = 0;
let mut lasty = 0;
for p in line.split(" -> ").map(|e| {
e.split(",")
.map(|f| f.parse::<usize>().unwrap())
.collect::<Vec<usize>>()
}) {
if minx > p[0] {
minx = p[0];
}
if maxx < p[0] {
maxx = p[0];
}
if maxy < p[1] {
maxy = p[1];
}
if lastx == 0 && lasty == 0 {
lastx = p[0];
lasty = p[1];
continue;
}
if lastx == p[0] {
// vertical
let r = if lasty < p[1] {
lasty..=p[1]
} else {
p[1]..=lasty
};
for y in r {
cave[y][lastx] = Tile::Rock;
}
} else if lasty == p[1] {
// horizontal
let r = if lastx < p[0] {
lastx..=p[0]
} else {
p[0]..=lastx
};
for x in r {
cave[lasty][x] = Tile::Rock;
}
} else {
return Err(anyhow!("diagonal line"));
}
lastx = p[0];
lasty = p[1];
}
}
//print_cave(&cave, minx, 0, maxx, maxy);
part1_sand_units(&cave, minx, maxx, maxy);
Ok(())
}
fn print_cave(cave: &Cave, minx: usize, miny: usize, maxx: usize, maxy: usize) {
println!("cave {},{} -> {},{}", minx, miny, maxx, maxy);
for y in miny..=maxy {
for x in minx..=maxx {
match cave[y][x] {
Tile::Air => print!("."),
Tile::Rock => print!("#"),
Tile::Source => print!("+"),
Tile::Sand => print!("o"),
}
}
println!();
}
}
fn part1_sand_units(c: &Cave, minx: usize, maxx: usize, maxy: usize) {
let mut cave = c.clone();
let mut units = 0;
loop {
let mut x = 500;
let mut placed = false;
for i in 0..200 {
if i > maxy || placed {
break;
}
match cave[i + 1][x] {
Tile::Air => {}
Tile::Source => {}
_ => {
if let Tile::Air = cave[i + 1][x - 1] {
x -= 1;
} else if let Tile::Air = cave[i + 1][x + 1] {
x += 1;
} else {
placed = true;
cave[i][x] = Tile::Sand;
break;
}
}
}
}
if placed {
units += 1;
} else {
break;
}
}
println!("part one units {}", units);
print_cave(&cave, minx, 0, maxx, maxy);
}
fn part2_sand_units(c: &Cave, minx: usize, maxx: usize, maxy: usize) {
let mut cave = c.clone();
let mut units = 0;
let floor = maxy + 2;
for i in 0..540 {
cave[floor][i] = Tile::Rock;
}
loop {
if let Tile::Sand = cave[500][0] {
break;
}
let mut x = 500;
let mut placed = false;
for i in 0..floor {
if placed {
break;
}
match cave[i + 1][x] {
Tile::Air => {}
Tile::Source => {}
_ => {
if let Tile::Air = cave[i + 1][x - 1] {
x -= 1;
} else if let Tile::Air = cave[i + 1][x + 1] {
x += 1;
} else {
placed = true;
cave[i][x] = Tile::Sand;
break;
}
}
}
}
if placed {
units += 1;
} else {
break;
}
}
println!("part two units {}", units);
print_cave(&cave, minx, 0, maxx, maxy);
}

1
2022/src/days/mod.rs
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@ -3,6 +3,7 @@ pub mod day10;
pub mod day11;
pub mod day12;
pub mod day13;
pub mod day14;
pub mod day2;
pub mod day3;
pub mod day4;

3
2022/src/main.rs
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@ -51,6 +51,9 @@ fn run_day(number: i32) -> Result<()> {
13 => {
days::day13::run()?;
}
14 => {
days::day14::run()?;
}
_ => return Err(anyhow!("Invalid day provided")),
}
Ok(())

2
2022/tests/day14.txt Normal file
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@ -0,0 +1,2 @@
498,4 -> 498,6 -> 496,6
503,4 -> 502,4 -> 502,9 -> 494,9