input: Write a python function to find the sum of non-repeated elements in a given array.
  assert find_Sum([1,2,3,1,1,4,5,6],8) == 21
  assert find_Sum([1,10,9,4,2,10,10,45,4],9) == 71
  assert find_Sum([12,10,9,45,2,10,10,45,10],9) == 78
  
output: def find_Sum(arr, n):
      unique_elements = set(arr)
      return sum(unique_elements)