diff --git a/forest.py b/forest.py
new file mode 100644
index 0000000..7aab431
--- /dev/null
+++ b/forest.py
@@ -0,0 +1,72 @@
+"""
+Есть абстрактная задача:
+
+У нас есть лес из json массива
+
+Гораздо дешевле в качестве транспорта их передавать в виде списка кортежей
+
+(вида ключ: значение),
+
+(ключ.ключ: значение)
+
+Пример:
+"""
+import json
+from typing import Any, List, Tuple
+
+forest = {'b': 1,
+          'c': {'d': 2,
+                'f': 3,
+                },
+          'e': {'i': 4,
+                'j': {'k': 5,
+                      'l': 6,
+                      },
+                },
+          'm': {'n': 7,
+                'o': {'p': 8,
+                      'r': {'s': 9,
+                            't': 10,
+                            },
+                      },
+                },
+          }
+
+# Переводим в такой вид:
+result = [('b', 1), ('c.d', 2), ('c.f', 3), ('e.i', 4), ('e.j.k', 5), ('e.j.l', 6), ('m.n', 7),
+          ('m.o.p', 8), ('m.o.r.s', 9), ('m.o.r.t', 10), ]
+
+
+def dict_to_list(sub_tree: dict, current_name: str, items_list: List[tuple]) -> List[tuple]:
+
+    for key in sub_tree:
+        if isinstance(sub_tree[key], dict):
+            dict_to_list(sub_tree=sub_tree[key], current_name=current_name + key, items_list=items_list)
+        else:
+            items_list.append(('.'.join(current_name + key), sub_tree[key]))
+    return items_list
+
+
+res = dict_to_list(forest, '', [])
+print(res)
+
+
+# Reverse task:
+
+
+def list_to_dict(data: List[Tuple['str', int]]) -> dict:
+    tree = {}
+    for item in data:
+        curr_tree = tree
+        keys = item[0].split('.')
+        for i in range(0, len(keys)):
+            if i == len(keys) - 1:
+                curr_tree[keys[i]] = item[1]
+            elif keys[i] not in curr_tree:
+                curr_tree[keys[i]] = {}
+            curr_tree = curr_tree[keys[i]]
+    return tree
+
+
+parsed = json.dumps(list_to_dict(result), indent=4)
+print(parsed)