aoc 2017 (day 1-6)

www/statics/aoc/2017/05_solution-2.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+
+import aoc
+import itertools
+
+
+rawinput = aoc.read_input(5)
+
+instructions = list(map(lambda x: int(x), rawinput.splitlines()))
+
+ilen = len(instructions)
+pos = 0
+
+for i in itertools.count(1):
+    v = instructions[pos]
+    instructions[pos] += -1 if v >= 3 else 1
+    pos += v
+    if pos < 0 or pos >= ilen:
+        print(i)
+        exit()