package main

import . "fmt"
import . "math/big"

func main() {
	a,p,q:=new(Int),new(Int),new(Int)
	Scan(a,p,q)
	b:=new(Int).Add(p,q)
	b.Mul(b,a)
	c:=new(Int).Mul(p,q)
	c.Mul(c,a)
	b.Mul(b,b)
	c.Mul(c,a).Mul(c,NewInt(4))
	if b.Cmp(c)>0 {
		Println("Yes")
	} else {
		Println("No")
	}
}