diff --git a/three.py b/three.py
new file mode 100755
index 0000000..39f77f9
--- /dev/null
+++ b/three.py
@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+from useful import *
+
+def stuff(l):
+    d = {x: True for x in l[:len(l)//2]}
+    return next(x for x in l[len(l)//2:] if d.get(x))
+
+def points(c):
+    o = ord(c)
+    return 27 + o - ord('A') if o < ord('a') else 1 + o - ord('a')
+
+#ic([points(stuff(l)) for l in lines(open(0))])
+print(sum(points(stuff(l)) for l in lines(open(0))))