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: Accepted)

#include <stdio.h>


int main(){

	int n;
	
	scanf("%d", &n);
	
	int numeros[n+1];
	int maior = 0, menor = 1000000000;
	
	
	for (int i = 0; i < n; i++){
		scanf("%d", &numeros[i]);
		if (maior < numeros[i])
			maior = numeros[i];
		if (menor > numeros[i])
			menor = numeros[i];
	}
	
	int subtracao = maior - menor;
	
	printf("%d\n", subtracao); 

	return 0;
}