print((function (f)
	local s = io.stdin:read("*l")
	local a,b,n = f(s:sub(1,1)),f(s:sub(2,2))+(f(s:sub(3,3))>4 and 1 or 0),#s-1
	if b==10 then a,b = a+1,0 end
	if a==10 then a,b,n = 1,0,n+1 end
	return ("%d.%d*10^%d"):format(a,b,n)
end)(tonumber))