Remove and Insert

Lab Python Beginner 10 points

Start with ["a", "b", "c", "d"]. Read a value to remove and a value to insert at the front. Remove the first value (if present), insert the second at index 0, then print the list.

Input

Two lines.

Output

The final list.

Example

Input

c
z

Output

['z', 'a', 'b', 'd']

Sample input available Sample output available

Editor

Python

Hints

remove(x) deletes the first x but raises an error if x is missing.

insert(index, value) puts a value at a position.

Solution explanation

Checking in first avoids the ValueError from remove.

Show solution

items = ["a", "b", "c", "d"]
old = input()
new = input()
if old in items:
    items.remove(old)
items.insert(0, new)
print(items)

Output

Answer