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 C# (.NET Core 3.1.201) (judge verdict: Wrong Answer)

using System;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var min = 10 ^ 9L;
        var max = 0L;

        var N = int.Parse(Console.ReadLine());
        var A = Console.ReadLine().Split(' ').Select(n => long.Parse(n)).ToArray();
        for (var i = 0; i < N; i++)
        {
            if (min > A[i])
                min = A[i];

            if (max < A[i])
                max = A[i];
        }
        
        Console.WriteLine(Math.Abs(max - min));
    }
}