Hello CF community,
I have a problem and I don't know how to solve it. Some time back, I took help from some amazing people on codeforces for a problem about finding frequency of a number in a range from l to r. The blog for the same is this — http://codeforces.com/blog/entry/52578
I was wondering about how can we solve the same problem given we have to keep an eye on updates also this time. The updates are basically range updates (adding x from l to r).