day9

day01.py

@@ -17,7 +17,7 @@ class Day(AOCDay):
         ]
     ]
 
-    def parse_input(self) -> (list, list):
+    def parse_input(self) -> tuple[list, list]:
         lefts, rights = [], []
         for line in self.getInput():
             left, right = map(int, line.split())
@@ -32,8 +32,8 @@ class Day(AOCDay):
 
     def part2(self) -> Any:
         lefts, rights = self.parse_input()
-        rights = Counter(rights)
-        return sum(num * rights[num] for num in lefts)
+        counted = Counter(rights)
+        return sum(num * counted[num] for num in lefts)
 
 
 if __name__ == '__main__':

day09.py

@@ -21,7 +21,6 @@ def get_checksum(head: Block) -> int:
     index = head
     count = 0
     while index is not None:
-        print((str(index.file_id) + "|") * index.file_length, end="")
         if index.file_id > 0:
             for _ in range(index.file_length):
                 checksum += index.file_id * count
@@ -30,7 +29,6 @@ def get_checksum(head: Block) -> int:
             count += index.file_length
         index = index.right
 
-    print()
     return checksum
 
 
@@ -42,7 +40,7 @@ class Day(AOCDay):
         ],
         [
             (2858, "input9_test"),
-            (None, "input9"),
+            (6373055193464, "input9"),
         ],
     ]
 
@@ -102,6 +100,9 @@ class Day(AOCDay):
 
         index = tail
         while index is not None:
+            while index.file_id == -1:
+                index = index.left
+
             search = head
             while search != index:
                 if search.file_id == -1 and search.file_length >= index.file_length:
@@ -120,8 +121,8 @@ class Day(AOCDay):
                         search.right.left = new_space
                         search.right = new_space
 
-                    index = new_free_space
                     break
+
                 search = search.right
 
             index = index.left