List Operations Simulation

You are given an integer \(k\) representing the number of commands followed by \(k\) lines, each containing a command.

Each command is one of the following two types:

• APPEND x: Append the positive integer \(x\) to the end of the list.
• REMOVE: Remove an element from the front of the list if the list is not empty.

After processing all commands in order, output the final state of the list.

Note: If the list becomes empty, output an empty line.

inputFormat

The first line contains a single integer \(k\), the number of commands.

The following \(k\) lines each contain a command, formatted as either APPEND x where \(x\) is a positive integer, or REMOVE.

outputFormat

Output the final list of integers after processing all commands. Print the integers separated by a single space. If the list is empty, output an empty line.

4
APPEND 3
APPEND 5
REMOVE
APPEND 2

5 2