The election campaign just started, so PSOS decided to make some propagation. One of the representatives came with a great idea - he proposes to make an photography of their Parliament Club. Unfortunatelly, even after many briefings, the representatives are still not able to agree upon an ordering of people in the photography. Moreover, there are a lot of representatives and it is not possible to have all of them in a single picture. The situation became critical. In the end, the representatives decided they will make one photo of every possible combination of people and their ordering. Different photographs will be used for a large number of billboards PSOS plan to use. To make things more clear, every person gets a Unique Identification Number (UIN). Every picture can be then described as the succession of several UINs x1, x2, ... xk, in whichxi is UIN of the i-th person in the picture x. Now we can sort all the possible photographs (combinations) to a single succession. The ordering of combinations of the same length (photographs with the same number of people in it) is defined as follows: the combination p is greater than the combination q if there exists any i such as that pj = qj for every j < i, and pi > qi. Your goal is to find the right place for a given picture among all possible photographs.