Problems
Maximum of absolute values
Maximum of absolute values
The sequence of real numbers is given. Lets find their absolute values. Find the maximum value among these absolute values.
Input data
First line contains the number n (n ≤ 100) of elements in the sequence. Next line gives n real numbers - the elements of the sequence, which values do not exceed 100 by absolute value.
Output data
Print the maximum value among the absolute values of given numbers with 2 digits after the decimal point.
Examples
Input example #1
5 6 7.5 2.1 2.0 0
Output example #1
7.50
Input example #2
4 -76.45 7.5 -5.1 75.23
Output example #2
76.45