days 15-18 (be careful, crap

day15/pypy.py

@@ -0,0 +1,28 @@
+import copy
+import itertools
+import time
+import collections
+import re
+import functools
+
+
+
+def p2():
+    inp =[2,0,1,7,4,14,18] 
+    nmbrs = {int(x): y + 1 for y, x in enumerate(inp[:-1])}
+    last = int(inp[-1])
+
+    for i in range(len(nmbrs) + 1, 30000000):
+        if last not in nmbrs:
+            nmbrs[last] = i
+            last = 0
+        else:
+            prev, nmbrs[last] = nmbrs[last], i
+            last = i - prev
+
+    print(last)
+
+
+start = time.time()
+p2()
+print(round(1000 * (time.time() - start), 2), "ms")