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(void){
  
  int i,j,tmp,N = 0;
  int a[] = {};
//  int max,min;

  scanf("%d",&N);

  for(i = 0;i < N;i++){
    scanf("%d",&a[i]);
  }
  for (i=0; i<N; ++i) {
    for (j=i+1; j<N; ++j) {
      if (a[i] > a[j]) {
        tmp =  a[i];
        a[i] = a[j];
        a[j] = tmp;
      }
    }
  }
  printf("%d",a[N-1]-a[0]);

  return 0;
}