diff --git a/labs02/task01.py b/labs02/task01.py
index bc47725..dcae6a2 100644
--- a/labs02/task01.py
+++ b/labs02/task01.py
@@ -24,3 +24,5 @@ def tests(f):
 
 if __name__ == "__main__":
     print(tests(even_elements))
+
+
diff --git a/labs02/task04.py b/labs02/task04.py
index 1b92f23..61d4d48 100644
--- a/labs02/task04.py
+++ b/labs02/task04.py
@@ -15,7 +15,7 @@ def sum_from_one_to_n(n):
             sum+=i
     return sum
 
-print(sum_from_one_to_n(3))
+
 
 
 def tests(f):
diff --git a/labs03/lab3.py b/labs03/lab3.py
deleted file mode 100644
index e69de29..0000000
diff --git a/labs03/task_lab_01.py b/labs03/task_lab_01.py
new file mode 100644
index 0000000..25aa3ae
--- /dev/null
+++ b/labs03/task_lab_01.py
@@ -0,0 +1,11 @@
+def dwojak(x): x *= 2
+
+
+l = [1, 2, 3]
+s = "123"
+
+dwojak(l)
+dwojak(s)
+
+print(l)
+print(s)
\ No newline at end of file