Indentation Adjustment

You are given a sequence of indentation levels for a piece of code consisting of n lines. Your task is to determine the minimum number of operations required to adjust the indentation level of a specific line to a desired level. In one operation, you can increase or decrease the indentation level by 1.

Formally, let the current indentation level on the given line be \( a \) and the desired indentation level be \( b \). The answer is \(|a-b|\), which represents the absolute difference.

For example, if the current indentation is 1 and the desired is 3, you will need 2 operations.

inputFormat

The input is read from standard input (stdin) and consists of three lines:

1. The first line contains an integer \( n \) which is the number of lines.
2. The second line contains \( n \) integers separated by spaces representing the indentation levels of each line.
3. The third line contains two integers: line (the 1-indexed line for which the change is desired) and desired_level (the target indentation level).

outputFormat

Output a single integer to standard output (stdout) which is the minimum number of operations required to adjust the indentation level of the specified line to the desired level.

4
0 1 2 3
2 3

2