Problem10475--ABC102 —— B - Maximum Difference

10475: ABC102 —— B - Maximum Difference

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Time Limit : 1.000 sec  Memory Limit : 512 MiB

Description

You are given an integer sequence $A$ of length $N$. Find the maximum absolute difference of two elements (with different indices) in $A$.

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 $A$.

Constraints

-   $2 \leq N \leq 100$
-   $1 \leq A_i \leq 10^9$
-   All values in input are integers.

Sample 1 Input

4
1 4 6 3

Sample 1 Output

5
The maximum absolute difference of two elements is $A_3−A_1=6−1=5$.

Sample 2 Input

2
1000000000 1

Sample 2 Output

999999999

Sample 3 Input

5
1 1 1 1 1

Sample 3 Output

0

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