diff --git a/1_problem.py b/1_problem.py
index 03ecc38..9a371cb 100644
--- a/1_problem.py
+++ b/1_problem.py
@@ -1,10 +1,20 @@
 from dask import delayed  # DON'T CHANGE (explained later)
+import time
+import math
 
 def func(i):
     """A dummy CPU-bound function."""
     print(f'Function {i} starting...')
     # ***INSERT CODE HERE*** (should take about 1 second to execute)
+    for i in range (800000000):
+        i += math.sqrt(2) 
     print(f'Function {i} done')
     return i
 
-lazy = [delayed(func)(i) for i in range(4)]  # DON'T CHANGE (explained later)
\ No newline at end of file
+
+start = time.time()
+
+lazy = [delayed(func)(i) for i in range(4)]  # DON'T CHANGE (explained later)
+
+end = time.time()
+print("it took {} seconds".format(end - start))