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-rw-r--r--day14/input151
-rw-r--r--day14/part1.rb68
-rw-r--r--day14/part2.rb65
-rw-r--r--day14/test2
4 files changed, 286 insertions, 0 deletions
diff --git a/day14/input b/day14/input
new file mode 100644
index 0000000..c91a439
--- /dev/null
+++ b/day14/input
@@ -0,0 +1,151 @@
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+484,39 -> 484,38 -> 484,39 -> 486,39 -> 486,33 -> 486,39 -> 488,39 -> 488,30 -> 488,39 -> 490,39 -> 490,35 -> 490,39 -> 492,39 -> 492,38 -> 492,39 -> 494,39 -> 494,30 -> 494,39 -> 496,39 -> 496,36 -> 496,39
+484,39 -> 484,38 -> 484,39 -> 486,39 -> 486,33 -> 486,39 -> 488,39 -> 488,30 -> 488,39 -> 490,39 -> 490,35 -> 490,39 -> 492,39 -> 492,38 -> 492,39 -> 494,39 -> 494,30 -> 494,39 -> 496,39 -> 496,36 -> 496,39
+489,115 -> 489,119 -> 481,119 -> 481,126 -> 494,126 -> 494,119 -> 493,119 -> 493,115
+481,92 -> 481,96 -> 476,96 -> 476,99 -> 487,99 -> 487,96 -> 485,96 -> 485,92
+492,26 -> 492,17 -> 492,26 -> 494,26 -> 494,16 -> 494,26 -> 496,26 -> 496,22 -> 496,26 -> 498,26 -> 498,17 -> 498,26 -> 500,26 -> 500,20 -> 500,26 -> 502,26 -> 502,25 -> 502,26 -> 504,26 -> 504,23 -> 504,26 -> 506,26 -> 506,21 -> 506,26 -> 508,26 -> 508,16 -> 508,26 -> 510,26 -> 510,24 -> 510,26
+492,26 -> 492,17 -> 492,26 -> 494,26 -> 494,16 -> 494,26 -> 496,26 -> 496,22 -> 496,26 -> 498,26 -> 498,17 -> 498,26 -> 500,26 -> 500,20 -> 500,26 -> 502,26 -> 502,25 -> 502,26 -> 504,26 -> 504,23 -> 504,26 -> 506,26 -> 506,21 -> 506,26 -> 508,26 -> 508,16 -> 508,26 -> 510,26 -> 510,24 -> 510,26
+489,115 -> 489,119 -> 481,119 -> 481,126 -> 494,126 -> 494,119 -> 493,119 -> 493,115
+492,153 -> 496,153
+502,150 -> 507,150
+470,49 -> 470,53 -> 468,53 -> 468,60 -> 477,60 -> 477,53 -> 476,53 -> 476,49
+475,88 -> 475,89 -> 483,89 -> 483,88
+480,134 -> 480,135 -> 500,135 -> 500,134
+470,76 -> 470,80 -> 466,80 -> 466,84 -> 481,84 -> 481,80 -> 474,80 -> 474,76
+492,26 -> 492,17 -> 492,26 -> 494,26 -> 494,16 -> 494,26 -> 496,26 -> 496,22 -> 496,26 -> 498,26 -> 498,17 -> 498,26 -> 500,26 -> 500,20 -> 500,26 -> 502,26 -> 502,25 -> 502,26 -> 504,26 -> 504,23 -> 504,26 -> 506,26 -> 506,21 -> 506,26 -> 508,26 -> 508,16 -> 508,26 -> 510,26 -> 510,24 -> 510,26
+480,166 -> 484,166
+470,49 -> 470,53 -> 468,53 -> 468,60 -> 477,60 -> 477,53 -> 476,53 -> 476,49
+470,76 -> 470,80 -> 466,80 -> 466,84 -> 481,84 -> 481,80 -> 474,80 -> 474,76
+485,112 -> 485,102 -> 485,112 -> 487,112 -> 487,111 -> 487,112 -> 489,112 -> 489,105 -> 489,112
+470,49 -> 470,53 -> 468,53 -> 468,60 -> 477,60 -> 477,53 -> 476,53 -> 476,49
diff --git a/day14/part1.rb b/day14/part1.rb
new file mode 100644
index 0000000..6c2a85f
--- /dev/null
+++ b/day14/part1.rb
@@ -0,0 +1,68 @@
+solids = []
+
+$stdin.readlines.map { |line|
+ line.strip.split(' -> ').map {
+ |coord| coord.split(?,).map(&:to_i)
+ }
+}.each { |path|
+ (path.length - 1).times { |i|
+ if path[i][0] == path[i+1][0]
+ x = path[i][0]
+ y1 = path[i][1]
+ y2 = path[i+1][1]
+ if y1 > y2
+ t = y2
+ y2 = y1
+ y1 = t
+ end
+ (y1..y2).each { |y| solids << [x, y] }
+ else
+ x1 = path[i][0]
+ x2 = path[i+1][0]
+ if x1 > x2
+ t = x2
+ x2 = x1
+ x1 = t
+ end
+ y = path[i][1]
+ (x1..x2).each { |x| solids << [x, y] }
+ end
+ }
+}
+
+solids.uniq!
+
+maxy = solids.map{ |_, y| y }.max
+
+sands = 0
+loop do
+ sand = [500, 0]
+ abyss = false
+ loop do
+ if solids.include?([sand[0], sand[1] + 1])
+ if solids.include?([sand[0] - 1, sand[1] + 1])
+ if solids.include?([sand[0] + 1, sand[1] + 1])
+ break
+ else
+ sand = [sand[0] + 1, sand[1] + 1]
+ end
+ else
+ sand = [sand[0] - 1, sand[1] + 1]
+ end
+ else
+ sand = [sand[0], sand[1] + 1]
+ end
+ if sand[1] > maxy
+ abyss = true
+ break
+ end
+ end
+ if abyss
+ break
+ else
+ solids << sand
+ sands += 1
+ end
+end
+
+puts sands
diff --git a/day14/part2.rb b/day14/part2.rb
new file mode 100644
index 0000000..dd58cb4
--- /dev/null
+++ b/day14/part2.rb
@@ -0,0 +1,65 @@
+solids = []
+
+$stdin.readlines.map { |line|
+ line.strip.split(' -> ').map {
+ |coord| coord.split(?,).map(&:to_i)
+ }
+}.each { |path|
+ (path.length - 1).times { |i|
+ if path[i][0] == path[i+1][0]
+ x = path[i][0]
+ y1 = path[i][1]
+ y2 = path[i+1][1]
+ if y1 > y2
+ t = y2
+ y2 = y1
+ y1 = t
+ end
+ (y1..y2).each { |y| solids << [x, y] }
+ else
+ x1 = path[i][0]
+ x2 = path[i+1][0]
+ if x1 > x2
+ t = x2
+ x2 = x1
+ x1 = t
+ end
+ y = path[i][1]
+ (x1..x2).each { |x| solids << [x, y] }
+ end
+ }
+}
+
+solids.uniq!
+
+floor = solids.map{ |_, y| y }.max + 1
+
+sands = 0
+loop do
+ puts sands
+ sand = [500, 0]
+ loop do
+ if sand[1] == floor
+ break
+ else
+ if solids.include?([sand[0], sand[1] + 1])
+ if solids.include?([sand[0] - 1, sand[1] + 1])
+ if solids.include?([sand[0] + 1, sand[1] + 1])
+ break
+ else
+ sand = [sand[0] + 1, sand[1] + 1]
+ end
+ else
+ sand = [sand[0] - 1, sand[1] + 1]
+ end
+ else
+ sand = [sand[0], sand[1] + 1]
+ end
+ end
+ end
+ solids << sand
+ sands += 1
+ break if sand == [500, 0]
+end
+
+puts sands
diff --git a/day14/test b/day14/test
new file mode 100644
index 0000000..4e87bb5
--- /dev/null
+++ b/day14/test
@@ -0,0 +1,2 @@
+498,4 -> 498,6 -> 496,6
+503,4 -> 502,4 -> 502,9 -> 494,9
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-04 08:34:04 +0000