diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7b36579
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+# VS Code
+.vscode/
+
+# Python
+__pycache__/
diff --git a/CODEOWNERS b/CODEOWNERS
new file mode 100644
index 0000000..707e4bb
--- /dev/null
+++ b/CODEOWNERS
@@ -0,0 +1 @@
+* @KubEF @Monrealle
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..0ba69bf
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 Stanislav Klimovich
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/src/.python-version b/src/.python-version
new file mode 100644
index 0000000..d2e8921
--- /dev/null
+++ b/src/.python-version
@@ -0,0 +1 @@
+Python 3.12.11
diff --git a/src/README.md b/src/README.md
new file mode 100644
index 0000000..46688f1
--- /dev/null
+++ b/src/README.md
@@ -0,0 +1 @@
+# Это описание файла
diff --git a/src/fast_pow.py b/src/fast_pow.py
index 1ba1dc1..ba6d0c9 100644
--- a/src/fast_pow.py
+++ b/src/fast_pow.py
@@ -1,6 +1,14 @@
 def fastPow(number, power):
-    result = number
-    while power != 1:
-        result *= result
+    if power < 0:
+        print("Степень не может быть отритцательной")
+    if power == 0:
+        return 1
+
+    result = 1
+    base = number
+    while power > 0:
+        if power % 2 == 1:
+            result *= base
+        base *= base
         power = power // 2
     return result
diff --git a/src/luhn.py b/src/luhn.py
index 11d993c..0c1d947 100644
--- a/src/luhn.py
+++ b/src/luhn.py
@@ -1,8 +1,21 @@
-def luhnСheck(cardNumber):
-    digits = [int(d) for d in str(cardNumber) if d.isdigit()]
-    control = digits.pop()
-    parity = (len(digits))%2
+def luhn_check(number_card):
+    """
+    Проверяет ввод по алгоритму Луна
+
+    Args:
+        numbee_card: Номер карты в виде строки или числа
+                     Может содержать пробелы и другие символы
+    Return:
+        True: Если номер карты корректен
+        False: Если номер карты неправильный
+    """
+    # Убираем все нецифровые символы
+    digits = [int(d) for d in str(number_card) if d.isdigit()]
+
+    control = digits.pop()  # Контрольная цифра
+    parity = (len(digits)) % 2
     total = 0
+
     for i in range(len(digits)):
         if i % 2 == parity:
             doubled = digits[i] * 2
@@ -11,4 +24,38 @@ def luhnСheck(cardNumber):
             total += doubled
         else:
             total += digits[i]
+
     return (total + control) % 10 == 0
+
+
+def main():
+    """Консольная утилита на основе алгоритма Луна для проверки номеров карт"""
+    print("Введите номер карты или -1 для выхода:")
+
+    while True:
+        try:
+            user_input = input("> ").strip()
+
+            # Проверяем ввод на наличие -1
+            if user_input == '-1':
+                print("Выход из программы")
+                break
+
+            # Проверяем, что ввод не пустой
+            if not user_input:
+                print("Ошибка, введите номер карты")
+                continue
+            # Проверяем номер карты
+            if luhn_check(user_input):
+                print("Correct")
+
+            else:
+                print("Incorrect")
+
+        except KeyboardInterrupt:
+            print("\nВыход из программы")
+            break
+
+
+if __name__ == "__main__":
+    main()
diff --git a/test/test_fast_pow.py b/test/test_fast_pow.py
index 5e4aebd..0089f85 100644
--- a/test/test_fast_pow.py
+++ b/test/test_fast_pow.py
@@ -1,9 +1,19 @@
 from src.fast_pow import fastPow
 
 
-def test_two_power_two():
+def test_unit_tests(): # unit тесты
     assert fastPow(2, 2) == 4
+    assert fastPow(1, 10) == 1
+    assert fastPow(3, 4) == 81
+    assert fastPow(5, 3) == 125
 
 
-def test_negative():
+def test_extreme_cases(): # Крайние случаи
     assert fastPow(-1, 4) == 1
+    assert fastPow(0, 10) == 0
+    assert fastPow(67, 0) == 1
+    assert fastPow(-2, 3) == -8
+
+def test_property_based_tests(): # Property based тесты
+    assert fastPow(7, 4) == 7 ** 4
+    assert fastPow(23, 0) == 23 ** 0
diff --git a/test/test_luhn.py b/test/test_luhn.py
index 1c021a2..c605c10 100644
--- a/test/test_luhn.py
+++ b/test/test_luhn.py
@@ -1,9 +1,8 @@
-from src.luhn import luhnСheck
+from src.luhn import luhn_check
 
 
 def test_good():
-    assert luhnСheck("8571 2612 1234 5467")
-
+    assert luhn_check("8571 2612 1234 5467")
 
 def test_bad():
-    assert not luhnСheck("4561 2612 1234 5463")
\ No newline at end of file
+    assert not luhn_check("4561 2612 1234 5463")