diff --git a/labs02/task01.py b/labs02/task01.py
index 7c08c56..e6b56ba 100644
--- a/labs02/task01.py
+++ b/labs02/task01.py
@@ -6,13 +6,17 @@ Zad 2. Napisz funkcję even_elements zwracającą listę,
 która zawiera tylko elementy z list o parzystych indeksach.
 """
 
-def even_elements(lista):
-    pass
+def days_in_year(days):
+    if ((days % 4) == 0 and ((days % 100) != 0)) or ((days % 400) == 0):
+        dni=366
+    else:
+        dni=365
 
+    return dni
 
 def tests(f):
-    inputs = [[[1, 2, 3, 4, 5, 6]], [[]], [[41]]]
-    outputs = [[1, 3, 5], [], [41]]
+    inputs = [[2015], [2012], [1900], [2400], [1977]]
+    outputs = [365, 366, 365, 366, 365]
 
     for input, output in zip(inputs, outputs):
         if f(*input) != output:
@@ -20,6 +24,5 @@ def tests(f):
             break
     return "TESTS PASSED"
 
-
 if __name__ == "__main__":
-    print(tests(even_elements))
+    print(tests(days_in_year))