SP14926 KIMO1 - abdou set

Description

abdou has a set of unique positive integers . he wants to add several (possibly none) new positive integers to this set, such that when the set is sorted for every two consecutive numbers X , Y we have abs(X%m-Y%m) = 1 . your task is to calculate the smallest possible count of new numbers, with which he can achieve that.

Input Format

N/A

Output Format

N/A