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>
#include <stdlib.h>

int main(void){
  long int N;
  scanf("%ld",&N);

  int i;
  long int a[N];
  long int maxtmp,mintmp;
  long int result;
  i=0;
  for(i=0;i<N;i++){
    scanf("%ld",&a[i]);
  }
  maxtmp=a[0],mintmp=a[0];

  for(i=0;i<N;i++){
    if(a[i] > maxtmp){
      maxtmp = a[i];
    }
    if(a[i] < maxtmp){
      mintmp = a[i];
    }
  }

  result = abs(maxtmp-mintmp);
  printf("%ld\n",result);

  return 0;
}