diff --git a/task4.py b/task4.py
index e69de29..9822fc0 100644
--- a/task4.py
+++ b/task4.py
@@ -0,0 +1,20 @@
+import sys 
+a = sys.argv[1]
+nums = []
+with open (a, "r") as b:
+    nums = [int(line) for line in b]
+sum = 0
+step = 0
+for num in nums:
+    sum+= num
+avg_num_r = round(sum/ len(nums))
+for num in nums:
+    while num != avg_num_r:
+        if num > avg_num_r:
+            num -= 1
+            step += 1
+        elif num < avg_num_r:
+            num += 1
+            step +=1
+print(step)
+                
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