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

const int N=200000;
int n,q,opt;
long long dick[N+10];
long long fuck[N+10];
long long x,y,z;

void cmp()
{
    int x1=x;
    if(x>=y) x=y,y=x1;
}

int main()
{
    freopen("whz_sequence.in","r",stdin);
    freopen("whz_sequence.out","w",stdout);
    cin>>n;
    for(int i=0;i<n;++i) 
    {
        cin>>dick[i];
        fuck[dick[i]]=i;
    }
    cin>>q;
    for(int i=0;i<q;++i)
    {
        cin>>opt;
        if(opt==1)
        {
            cin>>x>>y>>z;
            cmp();
            for(int i=0;i<n;++i)
            {
                if(dick[i]==x) 
                    for(int j=i;j<n;++j)
                    {
                        dick[j]+=z;
                        if(dick[j]==y) break;
                    }
                break;
            }
        }
        if(opt==2)
        {
            bool k=1;
            z=0;
            cin>>x>>y;
            cmp();
            for(int i=0;i<n;++i)
            {
                if(dick[i]==x)
                {
                    for(int j=i;j<n;++j)
                    {
                        if(k) 
                        {
                            z+=dick[j];
                            k=0;
                        }
                        else 
                        {
                            z-=dick[j];
                            k=1;
                        }
                        if(dick[j]==y) break;
                    }
                    cout<<z<<endl;
                    break;
                }
            }
        }
    }
    return 0;
} 
/*asd*/