diff --git a/Algo/B2/Exercises/Imperative exercise.md b/Algo/B2/Exercises/Imperative exercise.md
index 490ac86..580a6c1 100644
--- a/Algo/B2/Exercises/Imperative exercise.md	
+++ b/Algo/B2/Exercises/Imperative exercise.md	
@@ -4,7 +4,10 @@ def test (n: int) -> bool:
 	return n >= 100 and n < 100
 
 def sum_digits (n: int) -> int:
-	
+	a = n//100
+	b = (n//10)%10
+	c = n%10
+	return a*b*c
 ```
 
 ## Exercise 2: