class Program
{
    static void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());
        string[] numStr = Console.ReadLine().Split(' ');
        int[] numList = new int[n];
        long ave = 0;
        for(int i = 0; i < n; i++)
        {
            numList[i] = int.Parse(numStr[i]);
            ave += numList[i];
        }
        ave /= n;
        long difference = 0;
        int count = 0;
        while (count < n)
        {
            if (ave != numList[count])
            {
                difference += ave - numList[count];
            }
            count++;
        }
        if(difference != 0) 
        {
            Console.WriteLine("No");
        }
        else
        {
            Console.WriteLine("Yes");
        }
    }
}