Remove Duplicates Preserve Order

Remove duplicates from list preserving first occurrence order.

Your task

Implement this function:

def remove_duplicates(lst: list) -> list:

Write the function only — the arguments are read for you and the return value is printed automatically.

Arguments arrive as one Python literal per line, in this order: lst.

Example

Input

[1, 2, 2, 3, 1, 4]

Output

[1, 2, 3, 4]