Problems
Twice the minimum
Twice the minimum
The array of real numbers is given. Find the twice value of the minimum element in array.
\InputFile
The first line contains the number $n~(n \le 100)$ of elements in array. The second line contains $n$ real numbers --- the elements of array. Each value does not exceed $100$ by absolute value.
\OutputFile
Print the twice value of the minimum element in array with $2$ decimal digits.
Input example #1
6 6 7.5 2.1 2.0 0 -3
Output example #1
-6.00