day09

3 files changed, 46 insertions, 0 deletions

diff --git a/day09 b/day09
new file mode 100644
index 0000000..c4c806c
--- /dev/null
+++ b/day09
@@ -0,0 +1 @@
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diff --git a/day09.k b/day09.k
new file mode 100644
index 0000000..ba46db8
--- /dev/null
+++ b/day09.k
@@ -0,0 +1,17 @@
+r:*0:"day09"
+
+/ strictly speaking, you need
+/ g:{a:s[x;"("];b:s[*|a;")"];c:.:'s[*b;"x"]; $[#*b;((*a),(*/c)#*c#*|b;(*c)_*|b);(x;"")] }
+
+s:{{(x;1_y)}.(0,*&x=y)_x}
+g:{a:s[x;"("];b:s[*|a;")"];c:.:'s[*b;"x"]; ((*a),(*/c)#*c#*|b;(*c)_*|b) }
+#*{#*|x}{(*x;""),'g[*|x]}/("";r)
+/ 110346
+
+g2:{a:s[x;"("];b:s[*|a;")"];c:.:'s[*b;"x"]; $[#*b;((#*a)+*|c*f2[(*c)#*|b];(*c)_(*|b));(#x;"")] }
+
+f2:{*{#*|x}{v:g2[*|x];((*x)+*v;*|v)}/(0;x)}
+n:f2[r]
+
+,/$(_10000000!n%10000000;10000000!n)  / ewwww
+/ 10774309173
diff --git a/day09.rb b/day09.rb
new file mode 100644
index 0000000..eba5d58
--- /dev/null
+++ b/day09.rb
@@ -0,0 +1,28 @@
+s = File.read("day09").chomp
+
+o = ""
+while s =~ /\((\d+)x(\d+)\)/
+  o << $`
+  a, b = $1.to_i, $2.to_i
+  o << $'[0,a]*b
+  s = $'[a..-1]
+end
+o << s
+p o.size
+
+s = File.read("day09")
+
+def len(s)
+  o = 0
+  while s =~ /\((\d+)x(\d+)\)/
+    o += $`.size
+    r = $'
+    a, b = $1.to_i, $2.to_i
+    o += len(r[0,a])*b
+    s = r[a..-1]
+  end
+  o += s.size
+  o
+end
+
+p len(File.read("day09").chomp)