Shivansh wants to give chapo to Arpit, but only if he is able to solve the following problem. As you are a dear friend of Arpit, you decide to help Arpit solve the problem. Given an array Arr of N numbers. You have to process Q queries on that array. Queries can be of following types :
(1)add x to index y
(2) given y compute sum of (Arr[i]*(y%i)) for i from 1 to N.
First Line of input contains two space separated integers N and Q. Second Line contains N space separated integers Arr Arr ..... Arr[N] Next Q lines describe one query each and can be one of the two type:
-> 1 i X — Add X to index i.
-> 2 Y — compute sum of (Arr[i]*(Y%i)) for i from 1 to N.
1 <= N,Q <= 100000 1 <= Arr[i], X, Y <= 100000 1 <= i <= N
For each second type query output one integer per line — answer for this query.
3 2 3 4
1 2 1
I think it can be solved by segment tree, but I'm not able to figure out how to handle 'y'?