diff --git a/Week04/functions_bredikhin_illia.py b/Week04/functions_bredikhin_illia.py
new file mode 100644
index 00000000..d53e0b30
--- /dev/null
+++ b/Week04/functions_bredikhin_illia.py
@@ -0,0 +1,30 @@
+custom_power = lambda x=0, /, e=1: pow(x, e)
+
+
+def custom_equation(x: int = 0, y: int = 0, /, a: int = 1, b: int = 1, *, c: int = 1) -> float:
+    """
+    :param x:
+    :param y:
+    :param a:
+    :param b:
+    :param c:
+    :return:
+    """
+    for name, value in (("x", x), ("y", y), ("a", a), ("b", b), ("c", c)):
+        if type(value) is not int:
+            raise TypeError(f"{name} must be int")
+
+    result = pow(x, a) + pow(y, b)
+
+    return float(result / c)
+
+
+_count = 0
+
+
+def fn_w_counter() -> (int, dict[str, int]):
+    global _count
+
+    _count = _count + 1
+
+    return _count, dict({__name__: _count})