Day 10

10.py

@@ -0,0 +1,10 @@
+#!/usr/bin/python
+
+import re
+
+input = '1113222113'
+
+for _ in range(50):
+    input = ''.join(str(1 + len(m[1])) + m[0] for m in re.findall('(.)(\\1*)', input))
+
+print len(input)