1 files changed, 25 insertions, 0 deletions
diff --git a/day14.rb b/day14.rb
new file mode 100644
index 0000000..c290b18
--- /dev/null
+++ b/day14.rb
@@ -0,0 +1,25 @@
+d = 360781
+
+s = [3,7]
+e1 = 0
+e2 = 1
+
+30_000_000.times {
+#  p [:X, e1, e2, s[e1], s[e2]]
+  c = (s[e1] + s[e2]).to_s.split('').map(&:to_i)
+  s.concat c
+  e1 = (e1 + 1 + s[e1]) % s.size
+  e2 = (e2 + 1 + s[e2]) % s.size
+
+#  p s
+
+#  p s.size-6  if  s[-7]==3&&s[-6]==6&&s[-5]==0&&s[-4]==7&&s[-3]==9&&s[-2]==1
+#  p s.size-6  if  s[-6]==3&&s[-5]==6&&s[-4]==0&&s[-3]==7&&s[-2]==9&&s[-1]==1
+}
+
+p s.size
+p s[d,10].join('')
+# 6521571010
+
+p s.join('').index d.to_s
+# 20262967