Problem:
Score : 200 points

Problem Statement

You are given an integer sequence A of length N.
Find the maximum absolute difference of two elements (with different indices) in A.

Constraints

2 \leq N \leq 100

1 \leq A_i \leq 10^9

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N
A_1 A_2 ... A_N

Output

Print the maximum absolute difference of two elements (with different indices) in A.

Sample Input 1

4
1 4 6 3

Sample Output 1

5

The maximum absolute difference of two elements is A_3-A_1=6-1=5.

Sample Input 2

2
1000000000 1

Sample Output 2

999999999

Sample Input 3

5
1 1 1 1 1

Sample Output 3

0

Solution in JavaScript (node.js v5.12) (judge verdict: Runtime Error)

function Main(input) {
    line = input.split('\n');
    var n = parseInt(line[0]);
    var a = line[1].split(' ').map((n) => parseInt(n));

    var ma = -100;
    for (let i = 0; i < n; i++) {
        for (let j = i + 1; j < n; j++) {
            ma = Math.max(ma, Math.abs(a[i] - a[j]));
        }
    }
    console.log(ma);
}

Main(require('fs').readFileSync('/dev/stdin', 'utf8'));