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 CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;

template <typename T>
struct segtree {
	int n;
	vector<T> tree;
	
	segtree(int n_) {
		for (n = 1; n < n_; n *= 2) {
			
		}
		tree.assign(2 * n, 0);
	}
	
	void update(int a, int b, int index, int l, int r, T x) {
		if (r <= a || b <= l) {
			return;
		}
		if (a <= l && r <= b) {
			tree[index] += x;
			return;
		}
		update(a, b, 2 * index, l, (l + r) / 2, x);
		update(a, b, 2 * index + 1, (l + r) / 2, r, x);
	}
	
	void update(int l, int r, T x) {
		update(l, r, 1, 0, n, x);
	}
	
	T query(int a, int b, int index, int l, int r) {
		if (r <= a || b <= l) {
			return 0;
		}
		if (a <= l && r <= b) {
			return tree[index];
		}
		tree[2 * index] += tree[index];
		tree[2 * index + 1] += tree[index];
		tree[index] = 0;
		T puni = query(a, b, 2 * index, l, (l + r) / 2);
		T muni = query(a, b, 2 * index + 1, (l + r) / 2, r);
		return puni + muni;
	}
	
	T query(int l, int r) {
		return query(l, r, 1, 0, n);
	}
};

int main() {
	int n, q;
	cin >> n >> q;
	segtree<int> seg(n);
	for (int i = 0; i < q; i++) {
		bool b;
		cin >> b;
		if (b) {
			int x;
			cin >> x;
			cout << seg.query(x - 1, x) << endl;
		} else {
			int s, t, x;
			cin >> s >> t >> x;
			seg.update(s - 1, t, x);
		}
	}
	return 0;
}