Description

Maintain a sequence $a_i$ supporting two operations:

• 1 l r K D: You are given an arithmetic progression of length $r - l + 1$ with first term $K$ and common difference $D$, and you add it correspondingly to each number in the range $[l, r]$. Specifically: let $a_l=a_l+K,a_{l+1}=a_{l+1}+K+D\ldots a_r=a_r+K+(r-l) \times D$.

• 2 p: Query the value of the $p$-th element $a_p$.

Input Format

The first line contains two integers $n, m$ denoting the length of the sequence and the number of operations.

The second line contains $n$ integers, where the $i$-th number is $a_i$.

Each of the next $m$ lines starts with an integer $opt$.

If $opt = 1$, then four more integers $l\ r\ K\ D$ follow.

If $opt = 2$, then one more integer $p$ follows.

Output Format

For each query, output one integer per line representing the answer.

5 2
1 2 3 4 5
1 2 4 1 2
2 3

6

Hint

Constraints

For $100\%$ of the testdata, $0\le n,m \le 10^5,-200\le a_i,K,D\le 200, 1 \leq l \leq r \leq n, 1 \leq p \leq n$.

Translated by ChatGPT 5