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 (GCC 5.4.1) (judge verdict: Wrong Answer)

    #include<stdio.h>
    int main()
    {
        int a,i,mi,ma;
        int ret;
        int b[10000];
        scanf("%d", &a);
        
        i=0;
        mi =10^9;
        ma =0;
        for(i;i<a;i++){
         scanf("%d", &b[i]);
           if(b[i]>ma){
           ma =b[i];
           }
           if(b[i]<mi){
           mi =b[i];
           }
        }   
                 
        printf("%d",ma-mi);
        return 0;
    }