diff --git a/split_and_flat.py b/split_and_flat.py
new file mode 100644
index 0000000..1de70ea
--- /dev/null
+++ b/split_and_flat.py
@@ -0,0 +1,38 @@
+import sys
+
+
+def split_and_flat(input_string):
+    if "\n" in input_string:
+        _without_newlines = input_string.split("\n")
+        _without_empty = filter(lambda x: x != "", _without_newlines)
+        input_string = ",".join(_without_empty)
+    # Split the input string on commas
+    comma_split = input_string.split(",")
+
+    # Initialize an empty flat list
+    flat_list = []
+
+    # Iterate through the comma-separated values
+    for item in comma_split:
+        # Split each item on dashes
+        dash_split = item.split("-")
+
+        # Extend the flat list with the dash-separated values
+        flat_list.extend([value.strip().replace("\n", "") for value in dash_split])
+
+    map(lambda x: x.strip(), flat_list)
+    return ",".join(flat_list)
+
+
+if __name__ == "__main__":
+    # Check if a single command-line argument is provided
+    if len(sys.argv) != 2:
+        print("Usage: python split_and_flat.py <input_string>")
+        sys.exit(1)
+
+    # Get the input string from the command-line argument
+    input_string = sys.argv[1]
+
+    # Call the split_and_flat function and print the result
+    result = split_and_flat(input_string)
+    print(result)