diff --git a/labs04/task03.py b/labs04/task03.py
index 88741a4..7bdac90 100644
--- a/labs04/task03.py
+++ b/labs04/task03.py
@@ -1,3 +1,74 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 
+
+def is_numeric(x):
+
+    ile = len(x)
+    licznik = 0
+
+    for i in x:
+        if isinstance(i, (int, float)):
+            licznik += 1
+
+    if ile == licznik:
+        return True
+    else:
+        return False
+
+
+def add_coordinates(c1, c2):
+    new = []
+    if len(c1) == len(c2):
+        for i in range(0, len(c1)):
+            new.append(c1[i]+c2[i])
+    return new
+
+
+class DimensionError(Exception):
+    def __init__(self, text):
+        self.text = text
+
+    def __str__(self):
+        return self.text
+
+
+class Point:
+    def __init__(self, coordinates):
+
+        if not is_numeric(coordinates):
+            raise Exception('Lista zawiera wartosci nieliczbowe')
+        self.coordinates = coordinates
+
+        self.coordinates_to_string = 'Koordynaty punktu: ['
+        for c in coordinates:
+            self.coordinates_to_string += str(c) + ', '
+        self.coordinates_to_string = self.coordinates_to_string[:-2]
+        self.coordinates_to_string += ']'
+
+    def to_string(self):
+        print(self.coordinates_to_string)
+
+    def __str__(self):
+        return self.coordinates_to_string
+
+    def __add__(self, other):
+        if len(self.coordinates) != len(other.coordinates):
+            raise DimensionError('Punkty maja rozne wymiary')
+
+        return Point(add_coordinates(self.coordinates, other.coordinates))
+
+    def __len__(self):
+        return len(self.coordinates)
+
+
+a = Point([1, 1, 5])
+b = Point([2, 4, 4])
+
+print(a)
+b.to_string()
+print(len(b))
+
+c = a + b
+print(c)
+