using System;

public class Hello
{
    static long a, b, c, d;
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        a = long.Parse(line[0]);
        b = long.Parse(line[1]);
        c = long.Parse(line[2]);
        d = long.Parse(line[3]);
        getAns();
    }
    static void getAns()
    {
        var D = (a - c) * (a - c) - 8 * (b - d);
        if (D == 0) { Console.WriteLine("Yes"); return; }
        else if (D < 0) { Console.WriteLine("No"); return; }
        Console.WriteLine("{0} {1}", (a + c) / 2d, (b + d) / 2d);
    }
}