day 8

8/a.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+
+def main():
+    with open("input2.txt") as f:
+        numbers = [int(i) for i in f.read().split()]
+    mdtotal = 0
+
+    def parseit(data):
+        nonlocal mdtotal
+        children = data.pop(0)
+        metas = data.pop(0)
+
+        while children > 0:
+            children -= 1
+            parseit(data)
+
+        while metas > 0:
+            metas -= 1
+            mdtotal += data.pop(0)
+
+    parseit(numbers)
+    print(mdtotal)
+
+
+if __name__ == '__main__':
+    main()

8/b.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+
+
+def getnodevalue(data):
+    """
+    Get the current node value
+    - parse number of child nodes
+
+    """
+
+    children_count = data.pop(0)
+    meta_count = data.pop(0)
+
+    if children_count == 0:
+        value = 0
+        while meta_count > 0:
+            meta_count -= 1
+            value += data.pop(0)
+        return value
+    else:
+        child_values = []
+        while children_count > 0:
+            children_count -= 1
+            child_values.append(getnodevalue(data))
+        value = 0
+        while meta_count > 0:
+            meta_count -= 1
+            entry = data.pop(0)
+            if entry <= len(child_values):
+                value += child_values[entry - 1]
+        return value
+
+
+def main():
+    with open("input.txt") as f:
+        numbers = [int(i) for i in f.read().split()]
+
+    mdtotal = getnodevalue(numbers)
+
+    print(mdtotal)
+
+
+if __name__ == '__main__':
+    main()