def get_mean(size, numbers):
    """
    Gets the average for N elements in an array
    Input:
    - size(int): number of elements
    - number(array[float]): list of element to calculate the mean

    Returns:
    - res(float): mean of the elements
    """
    sum_nums = 0
    for element in numbers:
        sum_nums += int(element)
    
    res = round(sum_nums/size,1)

    return  res