func main()
	var a: int :: cui@inputInt()
	var b: int :: cui@inputInt()
	var c: int :: cui@inputInt()
	var d: int :: cui@inputInt()
	var p: int :: cui@inputInt()
	var q: int :: cui@inputInt()
	var r: int :: cui@inputInt()
	var s: int :: cui@inputInt()
	var t: int :: cui@inputInt()
	
	var ans: bool :: a * p + b * q + c * r + d * s <= t
	do cui@print((ans ?("Yes", "No")) ~ "\n")
end func