Imports System

Module Module1

    Sub Main()

        Dim tmp As String() = Split(Console.ReadLine(), " ")
        Dim A As Integer = CInt(tmp(0))
        Dim B As Integer = CInt(tmp(1))
        Dim C As Integer = CInt(tmp(2))

        Dim wA As Double = Math.Sqrt(A)
        Dim wB As Double = Math.Sqrt(B)
        Dim wC As Double = Math.Sqrt(C)

        If wA + wB < wC Then
            Console.WriteLine("Yes")
        Else
            Console.WriteLine("No")
        End If

        Console.ReadLine()

    End Sub

End Module
