Yes, granted, it depends on that, as well as on a number of other factors. I was really saying that a general solution with a large random data set can be extremely difficult or even next to impossible. But, depending on the data, there may be ways to considerably reduce the complexity, for example if it is possible to discard early a large proportion of the would-be solutions. But we need much more information to be able to decide on whether it is possible to work out such a strategy.