diff --git a/labs04/task01.py b/labs04/task01.py
index 121d5a8..0ca3b2d 100644
--- a/labs04/task01.py
+++ b/labs04/task01.py
@@ -8,3 +8,5 @@ def is_numeric(InputList):
         OutputLits.append(isinstance(t,(int, float)))
     #print(isinstance(x,(int, float)))
     return OutputLits
+
+print(is_numeric([-1,2.4,6]))
\ No newline at end of file
diff --git a/labs04/task02.py b/labs04/task02.py
index 4e5688f..1f7d4e4 100644
--- a/labs04/task02.py
+++ b/labs04/task02.py
@@ -2,4 +2,27 @@
 # -*- coding: utf-8 -*-
 
 class Employee:
-    def __init__(self, ,):
\ No newline at end of file
+    _id = 0
+
+    def __init__(self, name, surname):
+        Employee._id += 1
+        self.id = Employee._id
+        self.name = name
+        self.surname = surname
+
+    def get_id(self):
+        return self.id
+
+
+class Recruiter(Employee):
+    recruited = []
+
+    def recruit(self, Employee):
+        emp_id = Employee.id
+        self.recruited.append(emp_id)
+
+
+class Programmer(Employee):
+    def __init__(self, name, surname, Recruiter):
+        super().__init__(name, surname)
+        self.recruiter = Recruiter.id
\ No newline at end of file
diff --git a/labs04/task03.py b/labs04/task03.py
index 31c9d9d..63f98c7 100644
--- a/labs04/task03.py
+++ b/labs04/task03.py
@@ -1,19 +1,36 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
-
 def is_numeric(InputList):
     OutputLits = []
     for i in range(len(InputList)):
         t = InputList[i]
         OutputLits.append(isinstance(t,(int, float)))
+    #print(isinstance(x,(int, float)))
     return OutputLits
 
+
 class Point:
-    def __init__(self, StartList):
-        self.StartList = StartList
+    def __add__(self, other):
+        if len(self.cor)!=len(other.cor):
+            raise DimensionError("DimesnsionError")
+        else:
+            return [i+j for (i,j) in zip(self.cor,other.cor)]
+    def __init__(self, cor):
+        if (is_numeric(cor)):
+            self.cor=cor
+        else:
+            raise Exception("Wrong input")
+    def __len__(self):
+        return len(self.cor)
+    def __str__(self):
+        return(str(self.cor))
 
-    def retx(self):
-        return self
+class DimensionError(Exception):
+    def __init__(self, text):
+        self.text = text
+    def __str__(self):
+        return self.text
 
-x = Point([2])
-print(x.retx())
\ No newline at end of file
+test=Point([2,5])
+print(str(test))
+print(len(test))