2021: d13: ex2: add solution

2021/d05/ex1/ex1.py

@@ -3,7 +3,7 @@
 import itertools
 import sys
 from collections import Counter
-from typing import Iterable, List, NamedTuple, Tuple
+from typing import Iterable, List, Tuple, NamedTuple
 
 
 class Point(NamedTuple):

2021/d05/ex2/ex2.py

@@ -3,7 +3,7 @@
 import itertools
 import sys
 from collections import Counter
-from typing import Iterable, List, NamedTuple, Tuple
+from typing import Iterable, List, Tuple, NamedTuple
 
 
 class Point(NamedTuple):

2021/d06/ex1/ex1.py

@@ -6,6 +6,7 @@ from collections import Counter
 from dataclasses import dataclass
 from typing import Iterator, List, TypeVar
 
+
 T = TypeVar("T")
 
 

2021/d06/ex2/ex2.py

@@ -6,6 +6,7 @@ from collections import Counter
 from dataclasses import dataclass
 from typing import Iterator, List, TypeVar
 
+
 T = TypeVar("T")