Problem: Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:

* add(s, t, x): add x to as, as+1, ..., at.
* get(i): output the value of ai.



Note that the initial values of ai (i = 1, 2, . . . , n) are 0.

Constraints

* 1 ≤ n ≤ 100000
* 1 ≤ q ≤ 100000
* 1 ≤ s ≤ t ≤ n
* 1 ≤ i ≤ n
* 0 ≤ x ≤ 1000

Input


n q
query1
query2
:
queryq


In the first line, n (the number of elements in A) and q (the number of queries) are given. Then, ith query queryi is given in the following format:


0 s t x


or


1 t


The first digit represents the type of the query. '0' denotes add(s, t, x) and '1' denotes get(i).

Output

For each get operation, print the value.

Examples

Input

3 5
0 1 2 1
0 2 3 2
0 3 3 3
1 2
1 3


Output

3
5


Input

4 3
1 2
0 1 4 1
1 2


Output

0
1

Solution (in PYTHON3):

Solution:
class RAQ(object):
    INIT = 0

    def __init__(self, num) -> None:
        n = 1
        while n <= num:
            n = n * 2
        self.n = n
        self.val = [self.INIT] * (2 * n - 1)

    def update(self, beg: int, end: int, k: int, l: int, r: int, x: int) -> None:
        if (l == r or l == beg and r == end):  # noqa: E741
            self.val[k] += x
            return
        mid = (l + r) // 2
        if (end <= mid):
            self.update(beg, end, k * 2, l, mid, x)
        elif (beg > mid):
            self.update(beg, end, k * 2 + 1, mid + 1, r, x)
        else:
            self.update(beg, mid, k * 2, l, mid, x)
            self.update(mid + 1, end, k * 2 + 1, mid + 1, r, x)

    def find(self, k: int, l: int, r: int, idx: int) -> int:
        if (l == r):  # noqa: E741
            return self.val[k]
        mid = (l + r) // 2
        if (idx <= mid):
            return self.val[k] + self.find(k * 2, l, mid, idx)
        else:
            return self.val[k] + self.find(k * 2 + 1, mid + 1, r, idx)


if __name__ == "__main__":
    n, q = map(lambda x: int(x), input().split())
    raq = RAQ(n)

    for _ in range(q):
        com, *v = map(lambda x: int(x), input().split())
        if (0 == com):
            raq.update(v[0], v[1], 1, 1, n, v[2])
        else:
            print(f"{raq.find(1, 1, n, v[0])}")