1a

one.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+
+from useful import *
+
+def digits(l): # usually what we want really
+    return [int(x) for x in re.findall(r'-?[0-9]', l)]
+
+ls = lines(open(0)) # pretty much every time, yeah
+ns = [digits(l) for l in ls]
+
+sums = [int(str(n[0]) + str(n[-1])) for n in ns]
+print(sum(sums))

test1

@@ -0,0 +1,4 @@
+1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet