[2023] Day02

Author: lambda-mike

2023/day02.jl

@@ -0,0 +1,100 @@
+struct Cubes
+    red::Int64
+    green::Int64
+    blue::Int64
+end
+
+struct Game
+    id::Int64
+    subsets::Vector{Cubes}
+end
+
+function parseCube(str)
+    tokens = split(str)
+    colour = tokens[2]
+    n = parse(Int, tokens[1])
+    (colour, n)
+end
+
+function parseCubes(str)::Cubes
+    tokens = split(str, ", ")
+    red = 0
+    green = 0
+    blue = 0
+    for token in tokens
+        (c, n) = parseCube(token)
+        if c == "red"
+            red = n
+        elseif c == "green"
+            green = n
+        elseif c == "blue"
+            blue = n
+        else
+            throw(DomainError("unknown colour: $(c)"))
+        end
+    end
+    Cubes(red, green, blue)
+end
+
+# Game 100: 5 green, 1 red; 4 blue, 8 red, 4 green; 1 blue, 3 red, 15 green; 1 blue, 15 green, 1 red; 2 red, 13 green
+function parseGame(line)
+    tokens = split(line, [':'])
+    id = parse(Int, split(tokens[1])[2])
+    tokens = strip(tokens[2])
+    cubesTokens = split(tokens, "; ")
+    subsets = [ parseCubes(cubes) for cubes in cubesTokens ]
+    Game(id, subsets)
+end
+
+function violatesLimit(limit::Cubes, subset::Cubes)
+    limit.red < subset.red || limit.green < subset.green || limit.blue < subset.blue
+end
+
+function isPossible(limit::Cubes, game::Game)
+    !any(subset -> violatesLimit(limit, subset),game.subsets)
+end
+
+function solveA(games)
+    limit = Cubes(12, 13, 14)
+    filter(g -> isPossible(limit, g), games) |> xs -> map(x -> x.id, xs) |> sum
+end
+
+function computeGamePower(game::Game)::Int64
+    red = 0
+    green = 0
+    blue = 0
+    for subset in game.subsets
+        red = max(red, subset.red)
+        green = max(green, subset.green)
+        blue = max(blue, subset.blue)
+    end
+    red * green * blue
+end
+
+function solveB(games)
+    map(computeGamePower, games) |> sum
+end
+
+function main(file = "day02.txt")
+    println("file $file")
+    input = collect(eachline(file))
+    # input = strip(read(file, String))
+    games = [ parseGame(line) for line in input ]
+    # 2795
+    println("Solving Day02A...")
+    println(solveA(games))
+    # 75561
+    println("Solving Day02B...")
+    println(solveB(games))
+end
+
+if !isinteractive()
+    main()
+end
+
+function repl()
+    println("repl")
+    # file = "day02s.txt"
+    file = "day02.txt"
+    main(file)
+end

2023/day02.txt

@@ -0,0 +1,100 @@
+Game 1: 4 red, 5 blue, 9 green; 7 green, 7 blue, 3 red; 16 red, 7 blue, 3 green; 11 green, 11 blue, 6 red; 12 red, 14 blue
+Game 2: 12 blue, 11 green, 3 red; 6 blue, 5 green, 7 red; 5 red, 11 blue; 2 blue, 8 green
+Game 3: 8 blue, 5 green, 2 red; 5 blue, 5 green, 7 red; 7 blue, 1 green, 7 red; 8 green, 14 blue, 7 red; 8 green, 14 blue; 8 blue, 2 green, 8 red
+Game 4: 3 red, 14 blue, 15 green; 1 red, 11 green, 14 blue; 14 green, 17 blue
+Game 5: 11 green, 2 red, 10 blue; 16 green, 8 blue; 2 blue, 6 green, 1 red; 14 blue, 2 red, 16 green; 3 blue, 18 green; 1 red, 10 blue, 3 green
+Game 6: 2 green, 5 red, 17 blue; 12 green, 13 blue, 6 red; 8 red, 9 blue, 7 green
+Game 7: 2 blue, 18 green; 4 green, 1 red, 1 blue; 4 blue, 19 green
+Game 8: 6 green, 7 blue; 9 green, 6 blue; 7 blue, 1 red, 3 green
+Game 9: 4 blue, 12 green, 3 red; 4 green, 3 blue, 3 red; 3 green, 2 red, 3 blue; 1 green, 2 red, 3 blue; 15 red, 10 green, 4 blue; 3 blue, 1 red, 6 green
+Game 10: 11 blue, 6 green, 6 red; 15 green, 1 blue; 1 red, 6 blue, 4 green
+Game 11: 9 blue, 1 red, 6 green; 6 red, 1 green; 10 blue, 3 green, 6 red
+Game 12: 1 blue, 10 red, 1 green; 4 blue, 4 red; 8 red, 3 blue, 1 green; 3 red, 2 green
+Game 13: 3 red, 11 green, 18 blue; 11 green, 1 red, 3 blue; 12 blue, 5 red, 2 green; 16 blue, 8 red, 5 green; 8 red, 12 blue, 19 green; 17 blue, 4 green, 6 red
+Game 14: 8 red, 4 blue; 1 green, 2 blue, 13 red; 1 green, 1 blue, 17 red; 1 green, 13 red
+Game 15: 4 red, 3 blue, 6 green; 4 blue, 3 red, 3 green; 3 green, 6 red, 3 blue; 6 red, 5 blue, 2 green; 6 green, 1 blue; 4 green, 3 red, 2 blue
+Game 16: 11 green; 3 green, 1 blue, 1 red; 12 green, 3 blue, 1 red; 1 red, 1 green; 1 red, 3 blue; 2 green, 1 blue, 1 red
+Game 17: 12 red, 14 blue, 10 green; 2 red, 6 green, 6 blue; 10 blue, 2 green, 3 red; 1 red, 13 blue, 2 green; 9 green, 16 red, 9 blue
+Game 18: 15 red, 8 blue; 16 red, 12 blue; 5 blue, 4 green, 6 red; 8 red, 4 green, 3 blue; 7 red, 5 blue, 2 green; 1 blue, 2 green, 14 red
+Game 19: 3 red, 13 blue, 2 green; 8 red, 14 blue; 9 blue, 3 green; 9 blue, 1 green, 7 red; 8 red, 1 green; 8 red, 14 blue, 2 green
+Game 20: 6 green, 10 blue, 5 red; 8 green, 9 blue, 7 red; 2 red, 2 green, 7 blue; 7 red, 16 green, 12 blue; 15 green, 3 red; 12 green, 3 red, 6 blue
+Game 21: 2 green, 7 blue; 7 blue, 6 red; 6 blue, 2 red, 1 green; 11 blue, 1 red, 3 green
+Game 22: 5 red, 1 blue; 1 green, 2 red; 1 blue, 1 green, 5 red; 1 green, 2 blue, 4 red; 1 green, 3 red, 1 blue; 5 red, 3 blue, 1 green
+Game 23: 12 green, 7 red; 4 blue, 15 red, 2 green; 2 green, 16 red, 2 blue; 5 red, 10 green, 1 blue; 1 red, 4 green, 7 blue; 9 blue, 4 green, 12 red
+Game 24: 7 blue, 11 red, 4 green; 6 blue, 3 green; 1 blue, 14 red, 1 green; 2 blue, 4 green, 15 red; 7 red, 4 blue; 7 red, 2 blue, 3 green
+Game 25: 6 green, 10 red, 12 blue; 3 red, 16 blue; 10 blue, 10 red, 1 green; 3 red, 2 green, 13 blue; 2 green, 11 blue, 6 red
+Game 26: 6 red, 4 blue, 10 green; 3 blue, 1 green, 4 red; 5 blue; 11 blue, 9 green, 7 red
+Game 27: 1 red, 14 green, 9 blue; 13 green, 8 blue, 8 red; 7 red, 8 green, 6 blue; 7 blue, 3 red, 4 green; 18 green, 3 red
+Game 28: 2 red, 1 blue, 1 green; 1 blue; 1 red, 6 green, 2 blue; 5 green, 1 blue; 6 green; 2 green, 5 blue, 2 red
+Game 29: 2 blue, 2 green, 7 red; 3 red, 5 blue; 7 green, 14 blue, 3 red
+Game 30: 5 red, 11 green, 8 blue; 1 blue, 1 red, 15 green; 18 green, 12 blue; 5 red, 6 blue, 16 green; 12 blue, 1 red, 5 green
+Game 31: 1 blue, 7 red, 2 green; 8 green, 1 blue; 3 blue, 13 green, 2 red; 3 blue, 7 red
+Game 32: 10 green, 7 blue, 4 red; 18 green, 4 blue, 7 red; 5 blue, 6 red; 5 red, 5 blue, 1 green; 12 blue, 5 green, 8 red; 1 red, 6 green, 13 blue
+Game 33: 1 green, 2 red, 18 blue; 12 blue, 8 green; 8 green, 1 red, 16 blue; 10 green, 14 blue; 1 red, 3 blue, 8 green
+Game 34: 4 red, 4 blue; 10 blue, 8 red; 2 green, 5 blue, 20 red
+Game 35: 6 blue, 1 green, 4 red; 1 red, 2 blue, 2 green; 12 blue, 2 red; 11 blue, 1 green, 1 red; 2 blue; 2 red, 10 blue, 3 green
+Game 36: 2 green, 9 blue, 11 red; 5 blue, 11 red; 1 green, 1 red, 9 blue; 8 blue, 2 green; 11 red, 4 blue, 1 green; 7 blue, 2 green, 5 red
+Game 37: 10 blue, 5 green, 6 red; 5 red, 13 green, 10 blue; 1 green, 7 blue, 4 red; 10 green, 4 blue, 14 red; 13 green, 9 red, 1 blue
+Game 38: 5 blue, 4 green, 4 red; 4 blue, 11 green; 4 green, 3 red; 6 green, 7 blue; 6 blue, 1 red, 2 green
+Game 39: 8 blue, 1 green, 19 red; 15 red, 2 green, 7 blue; 1 green, 6 blue, 8 red; 16 red, 3 blue, 1 green
+Game 40: 4 green, 1 blue; 1 red, 2 blue, 3 green; 4 green, 1 blue, 2 red; 2 green, 1 blue, 2 red; 2 green
+Game 41: 3 red, 4 blue; 2 blue, 16 green; 2 red, 5 blue, 11 green; 13 green, 3 red, 6 blue; 3 blue, 19 green, 3 red; 5 green, 1 red, 3 blue
+Game 42: 6 green; 13 green, 1 blue; 1 blue, 5 green, 1 red; 1 blue, 6 green, 1 red; 2 red, 2 green, 1 blue
+Game 43: 8 green, 11 blue; 11 green, 12 blue; 1 blue, 5 red, 7 green; 1 blue, 11 green; 3 blue, 1 green
+Game 44: 3 green, 18 red, 16 blue; 2 blue, 2 green, 14 red; 13 red, 4 green, 17 blue; 3 red, 9 blue, 8 green; 11 red, 1 blue; 5 blue, 3 red, 7 green
+Game 45: 11 blue, 2 red; 8 green, 5 blue, 1 red; 14 blue, 5 green; 14 blue, 8 green; 10 blue, 11 green; 5 green, 1 red, 17 blue
+Game 46: 3 red, 3 blue, 1 green; 2 green, 7 red, 4 blue; 2 red, 1 green, 2 blue; 9 red, 1 green
+Game 47: 3 blue, 4 red, 2 green; 9 blue, 12 green, 11 red; 8 green, 19 red, 7 blue
+Game 48: 1 green, 9 red; 7 green, 16 red, 1 blue; 2 blue, 2 red, 5 green; 19 red, 3 blue, 2 green
+Game 49: 2 green, 17 blue, 18 red; 4 blue, 19 red, 11 green; 1 green, 5 blue, 15 red; 10 green, 6 red, 1 blue
+Game 50: 4 green, 8 blue, 6 red; 1 red, 6 blue, 4 green; 6 red, 5 green, 10 blue; 7 blue, 6 red
+Game 51: 2 green, 1 blue, 5 red; 13 blue, 10 green; 6 green, 1 red, 7 blue; 4 red, 3 green, 8 blue; 3 red, 9 blue, 4 green; 2 red, 12 blue, 8 green
+Game 52: 1 blue, 4 green, 6 red; 6 green, 6 red, 10 blue; 4 green, 3 red, 5 blue; 3 blue, 2 green, 4 red; 6 green, 5 blue, 9 red; 9 red, 5 green, 8 blue
+Game 53: 2 green, 6 blue, 6 red; 1 blue, 5 green, 13 red; 7 red, 5 blue, 1 green
+Game 54: 5 green, 6 blue, 2 red; 1 blue, 3 green; 6 green; 1 red, 2 blue, 5 green; 5 blue, 5 green
+Game 55: 9 blue, 15 green; 4 red, 1 green; 7 blue, 9 red, 11 green
+Game 56: 7 red, 2 blue, 4 green; 2 blue, 6 red, 6 green; 8 red, 7 green; 6 green, 2 red; 3 blue, 2 green, 7 red
+Game 57: 1 blue, 1 green, 1 red; 6 red, 2 green, 3 blue; 1 green; 3 blue, 8 red, 2 green
+Game 58: 14 blue, 5 red, 14 green; 5 blue, 7 green, 7 red; 19 blue, 10 red, 14 green; 7 green, 5 blue, 10 red; 2 red, 12 green, 2 blue
+Game 59: 1 red, 1 green, 1 blue; 10 blue; 3 blue, 1 green, 1 red
+Game 60: 6 blue, 6 green; 5 blue; 4 blue, 3 green; 10 green, 1 red, 4 blue
+Game 61: 2 green, 3 blue; 3 red, 3 blue; 2 red, 4 green
+Game 62: 3 red, 6 green, 2 blue; 6 red, 5 blue, 2 green; 13 green, 9 blue
+Game 63: 9 blue, 1 green; 14 blue, 12 red; 1 green, 6 red, 14 blue; 1 green, 2 red, 14 blue; 7 red, 18 blue, 1 green; 14 red, 2 blue
+Game 64: 4 blue, 16 red, 4 green; 9 red, 4 green, 3 blue; 2 red, 2 blue, 6 green; 2 blue, 2 green, 12 red
+Game 65: 2 red, 2 blue; 4 red, 9 green, 5 blue; 1 blue; 3 green, 1 red; 1 green, 2 blue, 8 red; 1 blue, 8 green, 3 red
+Game 66: 1 red, 3 green, 4 blue; 3 green, 5 red, 14 blue; 1 blue, 3 red, 2 green; 4 blue, 1 green, 2 red; 8 red, 2 green, 13 blue
+Game 67: 1 green, 1 red, 4 blue; 2 blue, 2 green, 1 red; 3 blue, 2 green, 1 red
+Game 68: 1 red, 2 blue; 5 green, 2 red, 2 blue; 7 red, 7 green, 2 blue
+Game 69: 15 red, 12 green, 1 blue; 3 green, 3 blue, 6 red; 9 blue, 16 green; 11 blue, 18 green, 7 red
+Game 70: 4 blue, 1 green, 6 red; 11 red, 3 green, 4 blue; 3 blue, 1 red, 1 green; 1 green, 11 red; 3 red, 4 blue, 1 green; 3 red, 4 blue, 2 green
+Game 71: 11 blue, 1 red; 10 blue, 10 green; 4 green, 11 blue; 5 green, 1 red, 6 blue; 6 green, 2 blue; 4 blue, 3 green
+Game 72: 1 red, 7 blue; 3 red, 3 green, 7 blue; 3 red, 3 green, 10 blue; 5 green, 7 blue
+Game 73: 2 blue, 1 red; 6 blue, 8 red, 18 green; 4 blue, 18 green, 1 red; 1 red, 5 blue, 2 green; 18 green, 8 red, 8 blue
+Game 74: 19 green, 9 blue, 14 red; 11 green, 8 blue, 14 red; 2 green, 17 blue, 14 red; 12 green, 12 blue, 7 red; 6 red, 5 blue, 10 green; 4 blue, 19 green, 15 red
+Game 75: 12 red, 3 green, 4 blue; 7 red, 6 green, 2 blue; 7 green, 3 red, 7 blue; 16 red, 3 green; 10 blue, 6 red, 3 green
+Game 76: 1 red, 11 blue, 4 green; 11 green, 3 blue, 3 red; 2 red, 14 green, 7 blue; 3 red, 6 blue, 9 green; 9 blue, 14 green; 1 red, 9 green, 3 blue
+Game 77: 10 blue, 2 red, 5 green; 5 green, 3 red, 12 blue; 3 green, 8 red, 4 blue; 5 blue, 12 red, 7 green; 18 blue, 7 red; 8 green, 8 blue, 13 red
+Game 78: 9 red, 11 green, 4 blue; 4 blue, 14 green; 2 red, 11 green, 6 blue; 2 blue, 5 red, 13 green; 6 red, 2 green
+Game 79: 2 green, 3 blue, 1 red; 6 green, 2 blue; 1 blue, 4 green
+Game 80: 2 green, 4 red; 1 green, 6 blue, 2 red; 8 blue, 3 red; 6 blue, 1 green; 6 red, 2 blue; 2 green, 2 blue
+Game 81: 5 red, 3 blue, 6 green; 3 blue, 17 green, 5 red; 3 red, 2 blue, 14 green; 1 blue, 2 red, 8 green
+Game 82: 16 green, 10 blue; 6 blue, 4 green, 2 red; 3 blue, 1 red, 16 green; 1 red, 7 green, 11 blue
+Game 83: 8 green, 7 blue; 1 blue, 6 green; 6 blue, 1 red, 3 green; 8 green, 1 red; 1 green, 5 blue
+Game 84: 9 blue, 6 red; 5 red, 7 green, 3 blue; 4 blue, 13 green, 2 red; 10 red, 11 green, 6 blue
+Game 85: 4 red, 10 blue; 8 green, 1 blue, 1 red; 9 blue, 6 green; 1 red, 4 green; 3 green, 8 blue
+Game 86: 7 blue, 9 green; 7 blue, 1 red, 4 green; 4 green, 13 blue
+Game 87: 12 red, 9 green, 2 blue; 8 green, 7 red; 11 red, 11 green; 4 blue, 8 green
+Game 88: 8 blue, 7 green, 7 red; 5 blue, 9 green; 3 red, 7 green, 6 blue; 1 green, 7 blue, 7 red
+Game 89: 7 green, 9 red, 7 blue; 1 green, 18 red; 3 red, 2 blue, 2 green; 15 red, 4 green, 6 blue
+Game 90: 4 blue, 5 red, 4 green; 4 green, 6 blue, 3 red; 4 green, 6 blue, 2 red; 8 blue, 4 red, 4 green; 3 blue, 2 red
+Game 91: 7 green, 5 red, 2 blue; 12 green, 2 blue, 6 red; 6 green, 1 blue; 1 green, 1 blue; 13 green, 1 red, 3 blue; 5 red, 1 blue, 4 green
+Game 92: 2 green; 1 red, 2 blue, 2 green; 2 red, 2 green, 2 blue; 2 blue, 7 red
+Game 93: 8 red, 5 blue; 10 red, 4 blue; 3 red, 2 blue; 7 blue, 10 red, 1 green; 6 blue; 10 blue
+Game 94: 2 blue, 4 green; 8 green, 9 blue; 2 green, 3 blue; 3 blue, 5 green; 9 blue, 1 red, 3 green; 6 blue, 6 green, 1 red
+Game 95: 3 blue, 13 red, 10 green; 4 green, 17 blue, 12 red; 12 red, 10 green, 16 blue; 15 red, 14 green, 2 blue; 12 red, 1 blue, 15 green; 10 green, 13 blue, 19 red
+Game 96: 5 green, 9 blue, 16 red; 17 red, 11 green, 9 blue; 10 blue, 13 green, 9 red; 10 blue, 7 red, 13 green; 3 red, 4 blue, 5 green
+Game 97: 6 blue, 4 green, 6 red; 4 red, 13 green, 2 blue; 15 green, 2 red; 2 green, 2 red
+Game 98: 10 blue, 13 red; 10 blue, 16 red, 4 green; 6 blue, 4 green, 14 red; 4 green, 1 blue, 11 red; 4 red, 4 green
+Game 99: 1 red, 4 blue; 5 red, 8 blue; 3 blue, 1 green; 2 red, 6 blue; 8 blue, 2 green, 3 red
+Game 100: 5 green, 1 red; 4 blue, 8 red, 4 green; 1 blue, 3 red, 15 green; 1 blue, 15 green, 1 red; 2 red, 13 green

2023/day02s.txt

@@ -0,0 +1,5 @@
+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green

2023/template.jl

@@ -8,9 +8,8 @@ end
 
 function main(file = "day01.txt")
     println("file $file")
-    # lines = eachline(file)
+    input = collect(eachline(file))
     # input = strip(read(file, String))
-    input = ""
     println("Solving Day01A...")
     println(solveA(input))
     println("Solving Day01B...")
@@ -25,5 +24,5 @@ function repl()
     println("repl")
     # file = "day01s.txt"
     file = "day01.txt"
-    # main("day01.txt")
+    # main(file)
 end