func main()
	var a: int :: cui@inputInt()
	var b: int :: cui@inputInt()
	var c: int :: cui@inputInt()
	var d: int :: cui@inputInt()
	
	var ans: int :: 0
	if(a = 0)
		do ans :: d / b
	elif(b = 0)
		do ans :: c / a
	else
		do ans :: lib@min(d / b, c / a)
	end if
	do cui@print("\{ans}\n")
end func