diff --git a/greedy_methods/minimum_coin_change.py b/greedy_methods/minimum_coin_change.py
index c18cf074c..b523da7e8 100644
--- a/greedy_methods/minimum_coin_change.py
+++ b/greedy_methods/minimum_coin_change.py
@@ -1,59 +1,13 @@
+import sys
 from doctest import testmod
-
-"""
-Test cases:
-Do you want to enter your denominations ? (Y/N) :N
-Enter the change you want to make in Indian Currency: 987
-Following is minimal  change for 987 :
-500 100 100 100 100 50 20 10 5 2
-
-Do you want to enter your denominations ? (Y/N) :Y
-Enter number of denomination:10
-1
-5
-10
-20
-50
-100
-200
-500
-1000
-2000
-Enter the change you want to make: 18745
-Following is minimal  change for 18745 :
-2000 2000 2000 2000 2000 2000 2000 2000 2000 500 200 20 20 5
-
-Do you want to enter your denominations ? (Y/N) :N
-Enter the change you want to make: 0
-The total value cannot be zero or negative.
-Do you want to enter your denominations ? (Y/N) :N
-Enter the change you want to make: -98
-The total value cannot be zero or negative.
-
-Do you want to enter your denominations ? (Y/N) :Y
-Enter number of denomination:5
-1
-5
-100
-500
-1000
-Enter the change you want to make: 456
-Following is minimal   change for 456 :
-100 100 100 100 5 5 5 5 5 5 5 5 5 5 5 1
-"""
-
-
 def find_minimum_change(denominations: list[int], value: int) -> list[int]:
     """
     Find the minimum change from the given denominations and value.
-
     Args:
         denominations (list[int]): List of available denominations.
         value (int): The amount of money to be changed.
-
     Returns:
         list[int]: List of denominations representing the minimal change.
-
     Examples:
     >>> find_minimum_change([1, 5, 10, 20, 50, 100, 200, 500, 1000, 2000], 18745)
     [2000, 2000, 2000, 2000, 2000, 2000, 2000, 2000, 2000, 500, 200, 20, 20, 5]
@@ -66,30 +20,22 @@ def find_minimum_change(denominations: list[int], value: int) -> list[int]:
     >>> find_minimum_change([1, 5, 100, 500, 1000], 456)
     [100, 100, 100, 100, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1]
     """
-
     # Sort denominations in descending order (biggest first)
     denominations.sort(reverse=True)
-
     # Initialize Result
     answer = []
-
     # Find minimal change using largest denominations first
     for denomination in denominations:
         while value >= denomination:
             value -= denomination
             answer.append(denomination)
-
     return answer
-
-
 # Driver Code
 if __name__ == "__main__":
     # Run doctest
     testmod()
-
     denominations = []
     value = 0
-
     if (
         input("Do you want to enter your denominations ? (y/n): ").strip().lower()
         == "y"
@@ -105,7 +51,7 @@ if __name__ == "__main__":
             )
         except ValueError:
             print("Invalid input. Please enter valid numbers.")
-            exit(1)
+            sys.exit(1)
     else:
         # Default denominations for Indian Currency
         denominations = [1, 2, 5, 10, 20, 50, 100, 500, 2000]
@@ -113,14 +59,12 @@ if __name__ == "__main__":
             value = int(input("Enter the change you want to make: ").strip())
         except ValueError:
             print("Invalid input. Please enter a valid number.")
-            exit(1)
-
+            sys.exit(1)
     # Ensure denominations are sorted in descending order
     denominations.sort(reverse=True)
-
     if value <= 0:
         print("The total value cannot be zero or negative.")
     else:
         print(f"Following is minimal change for {value}: ")
         answer = find_minimum_change(denominations, value)
-        print(" ".join(map(str, answer)))  # Optimized printing format
+        print(" ".join(map(str, answer)))  # Optimized printing format
\ No newline at end of file