Smallest Absolute Difference

Given an array of integers, the task is to find the smallest absolute difference between any two elements. Formally, you need to compute (\min_{1 \leq i < j \leq N} |A_i - A_j|). This problem requires careful handling of large ranges and duplicate values.

inputFormat

The first line contains a single integer (N) representing the number of elements in the array. The second line contains (N) space-separated integers.

outputFormat

Output a single integer representing the smallest absolute difference between any two elements in the array.## sample

5
3 8 -10 23 19

4