Many Lists

There are N sets numbered 1 to N, all initially empty. Your task is to perform two kinds of queries: - 0 l r x : add the number x to all the sets numbered from l to r. (Note that a set, by definition, can never contain duplicate elements. So a number is only added to a set if it was not already present.) - 1 q : output the size of the set numbered q. Input The first line contains two s