Sum of Absolute Integers

Given a list of integers, your task is to compute the sum of the absolute values of the integers. In other words, for a list of integers a₁, a₂, ..., a_n, you should compute:

\( S = \sum_{i=1}^{n} |a_i| \)

Be sure to read the input from standard input and write the result to standard output.

inputFormat

The input consists of two lines:

• The first line contains an integer n representing the number of elements.
• The second line contains n space-separated integers.

outputFormat

Output a single integer which is the sum of the absolute values of the given integers.

## sample

5
1 -2 3 -4 5

15

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