22b (slow!)

zweiundzwanzig.py

@@ -66,3 +66,18 @@ dprint(supporting)
 ic(supporters)
 print(sum(1 for k, v in supporting.items() if \
         all(supporters[vv] > 1 for vv in v)))
+
+# part 2. basically just repeat the first part of part 1.
+all_grounded = grounded
+total = 0
+for i, g in enumerate(all_grounded):
+    if i == 0: # our own fake box
+        continue
+    grounded = np.asarray([(-666, -666, 0, 666, 666, 1)])
+    moving = np.append(all_grounded[1:i], all_grounded[i+1:], axis=0)
+    gtree = index.Index(properties=index.Property(dimension=3))
+    gtree.insert(0, grounded[0])
+    assign_touching_ground_to_ground()
+    ic(i, len(moving))
+    total += len(moving)
+print(total)