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;

const int MAX_N = 1<<17;

long long n,dat[2*MAX_N-1];

//?????????
void init(int n_){
  //????´???°n???2???????????????
  n=1;
  while(n<n_)n*=2;
  for(int i=0;i<2*n-1;i++)dat[i]=0;
}

void update(int a,int b,int k,int l,int r,int x){
  if(r<=a||b<=l)return;
  if(a<=l&&r<=b)dat[k]+=x*(r-l);
  else{
    dat[k*2+1]+=dat[k]/2;
    dat[k*2+2]+=dat[k]/2;
    dat[k]=0;
    update(a,b,k*2+1,l,(l+r)/2,x);
    update(a,b,k*2+2,(l+r)/2,r,x);
  }
}

int find(int a,int b,int k,int l,int r){
  if(r<=a||b<=l)return 0;
  if(a<=l&&r<=b)return dat[k];
  else{
    dat[k*2+1]+=dat[k]/2;
    dat[k*2+2]+=dat[k]/2;
    dat[k]=0;
    return find(a,b,k*2+1,l,(l+r)/2)+find(a,b,k*2+2,(l+r)/2,r);
  }
}

int main(){
  int q;
  cin>>n>>q;
  
  init(n);
  int u,s,t,x;
  for(int i=0;i<q;i++){
    cin>>u;
    if(!u){
      cin>>s>>t>>x;
      s--,t--;
      update(s,t+1,0,0,n,x);
    }else{
      cin>>s;
      s--;
      cout<<find(s,s+1,0,0,n)<<endl;
    }
  }
  
  return 0;
}