print((function (f, s)
	return f(s)
end)(function (s)
	function f(n)
		local isF,isB = n%3==0,n%5==0
		return (isF and isB) and 8 or
			(isF or isB) and 4 or #tostring(n)
	end
	local r = 0
	for e in s:gmatch("%d+") do r=r+f(tonumber(e)) end
	return r
end, io.stdin:read("*l")))