using System.Data.SqlTypes;
using System.Numerics;

public class Program
{
    public static void Main()
    {

        //BigInteger num = BigInteger.Parse(Console.ReadLine() ?? string.Empty);
        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        string[] moji = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string str = Console.ReadLine() ?? string.Empty;

        int a = 100+int.Parse(moji[0]);
        int b = 100+int.Parse(moji[1]);
        int c = 100+int.Parse(moji[2]);

        int money = a + b + c;
        if(money % 3==0)
        {
            Console.WriteLine("Yes");
        }
        else
        {
            Console.WriteLine("No");
        }

            

    }
}