Score : 200 points
You are given an integer sequence A of length N. Find the maximum absolute difference of two elements (with different indices) in A.
Input is given from Standard Input in the following format:
N A_1 A_2 ... A_N
Print the maximum absolute difference of two elements (with different indices) in A.
4 1 4 6 3
5
The maximum absolute difference of two elements is A_3-A_1=6-1=5.
2 1000000000 1
999999999
5 1 1 1 1 1
0