Add day 14

2022-12-14 22:04:14 +01:00 · 2022-12-14 22:04:14 +01:00 · f951932c2c
commit f951932c2c
parent 3d507bbda4
4 changed files with 236 additions and 0 deletions
--- a/Cargo.toml
+++ b/Cargo.toml
@ -61,4 +61,8 @@ path = "src/day12/main.rs"
 name = "day13"
 path = "src/day13/main.rs"

+[[bin]]
+name = "day14"
+path = "src/day14/main.rs"
+
 [dependencies]
--- a/day14.txt
+++ b/day14.txt
@ -0,0 +1,129 @@
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+484,41 -> 484,42 -> 495,42 -> 495,41
+494,51 -> 498,51
+470,158 -> 475,158
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+468,123 -> 468,127 -> 460,127 -> 460,132 -> 474,132 -> 474,127 -> 473,127 -> 473,123
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+458,171 -> 462,171
+473,73 -> 473,77 -> 466,77 -> 466,82 -> 485,82 -> 485,77 -> 477,77 -> 477,73
+492,162 -> 497,162
+494,27 -> 498,27
+471,162 -> 476,162
+480,156 -> 485,156
+498,13 -> 498,17 -> 497,17 -> 497,24 -> 505,24 -> 505,17 -> 502,17 -> 502,13
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+461,165 -> 465,165
+477,70 -> 487,70 -> 487,69
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+473,73 -> 473,77 -> 466,77 -> 466,82 -> 485,82 -> 485,77 -> 477,77 -> 477,73
+462,85 -> 462,88 -> 454,88 -> 454,94 -> 470,94 -> 470,88 -> 466,88 -> 466,85
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+482,37 -> 488,37 -> 488,36
+473,73 -> 473,77 -> 466,77 -> 466,82 -> 485,82 -> 485,77 -> 477,77 -> 477,73
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+464,162 -> 469,162
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+473,173 -> 477,173
+462,85 -> 462,88 -> 454,88 -> 454,94 -> 470,94 -> 470,88 -> 466,88 -> 466,85
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+473,73 -> 473,77 -> 466,77 -> 466,82 -> 485,82 -> 485,77 -> 477,77 -> 477,73
+498,13 -> 498,17 -> 497,17 -> 497,24 -> 505,24 -> 505,17 -> 502,17 -> 502,13
+464,167 -> 468,167
+468,107 -> 468,100 -> 468,107 -> 470,107 -> 470,104 -> 470,107 -> 472,107 -> 472,97 -> 472,107
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+476,154 -> 481,154
+461,173 -> 465,173
+468,123 -> 468,127 -> 460,127 -> 460,132 -> 474,132 -> 474,127 -> 473,127 -> 473,123
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+468,107 -> 468,100 -> 468,107 -> 470,107 -> 470,104 -> 470,107 -> 472,107 -> 472,97 -> 472,107
+494,33 -> 498,33
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+477,70 -> 487,70 -> 487,69
+473,156 -> 478,156
+455,173 -> 459,173
+478,162 -> 483,162
+462,85 -> 462,88 -> 454,88 -> 454,94 -> 470,94 -> 470,88 -> 466,88 -> 466,85
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+467,173 -> 471,173
+498,13 -> 498,17 -> 497,17 -> 497,24 -> 505,24 -> 505,17 -> 502,17 -> 502,13
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+484,41 -> 484,42 -> 495,42 -> 495,41
+497,30 -> 501,30
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+498,13 -> 498,17 -> 497,17 -> 497,24 -> 505,24 -> 505,17 -> 502,17 -> 502,13
+498,13 -> 498,17 -> 497,17 -> 497,24 -> 505,24 -> 505,17 -> 502,17 -> 502,13
+468,123 -> 468,127 -> 460,127 -> 460,132 -> 474,132 -> 474,127 -> 473,127 -> 473,123
+485,162 -> 490,162
+482,37 -> 488,37 -> 488,36
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+491,30 -> 495,30
+468,107 -> 468,100 -> 468,107 -> 470,107 -> 470,104 -> 470,107 -> 472,107 -> 472,97 -> 472,107
+467,169 -> 471,169
+452,171 -> 456,171
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+464,171 -> 468,171
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+484,41 -> 484,42 -> 495,42 -> 495,41
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+468,123 -> 468,127 -> 460,127 -> 460,132 -> 474,132 -> 474,127 -> 473,127 -> 473,123
+474,160 -> 479,160
+500,51 -> 504,51
+494,45 -> 498,45
+461,169 -> 465,169
+468,123 -> 468,127 -> 460,127 -> 460,132 -> 474,132 -> 474,127 -> 473,127 -> 473,123
+488,51 -> 492,51
+458,167 -> 462,167
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+468,107 -> 468,100 -> 468,107 -> 470,107 -> 470,104 -> 470,107 -> 472,107 -> 472,97 -> 472,107
+498,13 -> 498,17 -> 497,17 -> 497,24 -> 505,24 -> 505,17 -> 502,17 -> 502,13
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+466,137 -> 466,138 -> 484,138
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+468,107 -> 468,100 -> 468,107 -> 470,107 -> 470,104 -> 470,107 -> 472,107 -> 472,97 -> 472,107
+468,107 -> 468,100 -> 468,107 -> 470,107 -> 470,104 -> 470,107 -> 472,107 -> 472,97 -> 472,107
+468,107 -> 468,100 -> 468,107 -> 470,107 -> 470,104 -> 470,107 -> 472,107 -> 472,97 -> 472,107
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+468,123 -> 468,127 -> 460,127 -> 460,132 -> 474,132 -> 474,127 -> 473,127 -> 473,123
+498,13 -> 498,17 -> 497,17 -> 497,24 -> 505,24 -> 505,17 -> 502,17 -> 502,13
+467,160 -> 472,160
+468,107 -> 468,100 -> 468,107 -> 470,107 -> 470,104 -> 470,107 -> 472,107 -> 472,97 -> 472,107
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+481,160 -> 486,160
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+497,48 -> 501,48
+491,48 -> 495,48
+455,169 -> 459,169
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+500,33 -> 504,33
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+449,173 -> 453,173
+473,73 -> 473,77 -> 466,77 -> 466,82 -> 485,82 -> 485,77 -> 477,77 -> 477,73
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+470,171 -> 474,171
+477,158 -> 482,158
+468,123 -> 468,127 -> 460,127 -> 460,132 -> 474,132 -> 474,127 -> 473,127 -> 473,123
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+462,120 -> 462,112 -> 462,120 -> 464,120 -> 464,114 -> 464,120 -> 466,120 -> 466,119 -> 466,120 -> 468,120 -> 468,118 -> 468,120 -> 470,120 -> 470,119 -> 470,120
+473,73 -> 473,77 -> 466,77 -> 466,82 -> 485,82 -> 485,77 -> 477,77 -> 477,73
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+473,73 -> 473,77 -> 466,77 -> 466,82 -> 485,82 -> 485,77 -> 477,77 -> 477,73
+466,137 -> 466,138 -> 484,138
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+484,158 -> 489,158
+462,85 -> 462,88 -> 454,88 -> 454,94 -> 470,94 -> 470,88 -> 466,88 -> 466,85
+462,85 -> 462,88 -> 454,88 -> 454,94 -> 470,94 -> 470,88 -> 466,88 -> 466,85
+488,33 -> 492,33
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+462,85 -> 462,88 -> 454,88 -> 454,94 -> 470,94 -> 470,88 -> 466,88 -> 466,85
+480,151 -> 480,145 -> 480,151 -> 482,151 -> 482,150 -> 482,151 -> 484,151 -> 484,144 -> 484,151 -> 486,151 -> 486,148 -> 486,151 -> 488,151 -> 488,142 -> 488,151
+482,64 -> 482,59 -> 482,64 -> 484,64 -> 484,55 -> 484,64 -> 486,64 -> 486,58 -> 486,64 -> 488,64 -> 488,54 -> 488,64 -> 490,64 -> 490,55 -> 490,64
+488,160 -> 493,160
+462,85 -> 462,88 -> 454,88 -> 454,94 -> 470,94 -> 470,88 -> 466,88 -> 466,85
--- a/day14_test.txt
+++ b/day14_test.txt
@ -0,0 +1,2 @@
+498,4 -> 498,6 -> 496,6
+503,4 -> 502,4 -> 502,9 -> 494,9
--- a/src/day14/main.rs
+++ b/src/day14/main.rs
@ -0,0 +1,101 @@
+use std::collections::HashSet;
+use base::read_file;
+
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+struct Pos(i32, i32);
+
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+struct Line(Pos, Pos);
+
+impl Line {
+    fn contains(&self, p: &Pos) -> bool {
+        let Pos(x1, y1) = self.0;
+        let Pos(x2, y2) = self.1;
+        let x_max = x1.max(x2);
+        let x_min = x1.min(x2);
+        let y_max = y1.max(y2);
+        let y_min = y1.min(y2);
+        return if x1 == x2 {
+            let y_range = y_min..=y_max;
+            p.0 == x1 && y_range.contains(&p.1)
+        } else if y1 == y2 {
+            let x_range = x_min..=x_max;
+            x_range.contains(&p.0) && p.1 == y1
+        } else {
+            false
+        };
+    }
+}
+
+impl Pos {
+    fn can_move_to(&self, relative: &Pos, lines: &Vec<Line>, others: &HashSet<Pos>) -> bool {
+        let relative = Pos(self.0 + relative.0, self.1 + relative.1);
+        for line in lines {
+            if line.contains(&relative) {
+                return false;
+            }
+        }
+
+        !others.contains(&relative)
+    }
+}
+
+fn do_simulation(rock_lines: &Vec<Line>, max_height: i32) -> u32 {
+    let mut spawns = 0;
+    let mut sands = HashSet::new();
+    let sand_spawn = Pos(500, 0);
+    let mut sand = sand_spawn;
+
+
+    loop {
+        if sand.can_move_to(&Pos(0, 1), &rock_lines, &sands) {
+            sand = Pos(sand.0, sand.1 + 1);
+        } else if sand.can_move_to(&Pos(-1, 1), &rock_lines, &sands) {
+            sand = Pos(sand.0 - 1, sand.1 + 1);
+        } else if sand.can_move_to(&Pos(1, 1), &rock_lines, &sands) {
+            sand = Pos(sand.0 + 1, sand.1 + 1);
+        } else {
+            if sand == sand_spawn {
+                spawns += 1;
+                break;
+            }
+            sands.insert(sand);
+            sand = sand_spawn;
+            spawns += 1;
+        }
+
+        if sand.1 == max_height {
+            println!("Sand reached void");
+            break;
+        }
+    }
+
+    spawns
+}
+
+fn main() {
+    let lines = read_file("day14.txt");
+    let mut rock_lines = vec![];
+
+    for x in lines {
+        x.split_whitespace().filter(|s| !(s == &"->")).map(|s| {
+            let mut split = s.split(',');
+            let x = split.next().unwrap().parse().unwrap();
+            let y = split.next().unwrap().parse().unwrap();
+            Pos(x, y)
+        }).collect::<Vec<_>>().windows(2).map(|pos| Line(pos[0], pos[1])).collect::<Vec<_>>().iter().for_each(|line| rock_lines.push(*line));
+    }
+
+
+    let max_height = rock_lines.iter().flat_map(|line| [line.0.1, line.1.1]).max().unwrap() + 1;
+    println!("Everything above {max_height} is void");
+
+   let task1 = do_simulation(&rock_lines, max_height);
+    println!("Task1: Got {task1} spawns");
+
+    rock_lines.push(Line(Pos(i32::MIN, max_height + 1), Pos(i32::MAX, max_height + 1)));
+
+    let task2 = do_simulation(&rock_lines, i32::MAX);
+    println!("Task2: Got {task2} spawns");
+
+}