add rest HEAD master

1 files changed, 43 insertions, 0 deletions

diff --git a/day08.rb b/day08.rb
new file mode 100644
index 0000000..a51543b
--- /dev/null
+++ b/day08.rb
@@ -0,0 +1,43 @@
+d=File.read("day08").split.map(&:to_i)
+
+def t(d)
+  return 0  if d.empty?
+
+  len = d.shift
+  md = d.shift
+
+  mds = 0
+  (0...len).map {
+    mds += t(d)
+  }
+  mds += d.shift(md).sum
+end
+
+def s(d)
+  return 0  if d.empty?
+
+  len = d.shift
+  md = d.shift
+
+  mds = (0...len).map {
+    s(d)
+  }
+  
+  m = d.shift(md)
+
+  if len == 0
+    m.sum
+  else
+    m.map { |i|
+      if i <=0 || i > mds.size
+        0
+      else
+        mds[i-1]
+      end
+    }.sum
+  end
+end
+
+p t(d.clone)  # 35852
+p s(d.clone)  # 33422
+