Compute the Mean of a Sample Data Set

Given a set of sample data, compute the arithmetic mean of the dataset.

The arithmetic mean is defined as: \(\bar{x}=\frac{1}{n}\sum_{i=1}^{n}x_i\), where \(n\) is the number of samples and \(x_i\) are the sample values.

inputFormat

The first line of input contains an integer \(n\), representing the number of sample data points.

The second line contains \(n\) space-separated numbers.

outputFormat

Output a single line containing the arithmetic mean of the given data, formatted to one decimal place.

sample

5
1 2 3 4 5

3.0