using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace atcorder
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] hw = Console.ReadLine().Split(' ');
            int[] hw_array = hw.Select(int.Parse).ToArray();

            int a = hw_array[0];
            int b = hw_array[1];
            int c = hw_array[2];

            double sa = Math.Sqrt((double)a);
            double sb = Math.Sqrt((double)b);
            double sc = Math.Sqrt((double)c);

            double left = sa + sb;

            if ( left < sc )
                Console.WriteLine("Yes");
            else
                Console.WriteLine("No");
        }
    }
}
