#include <iostream>
#include <fstream>

using namespace std;

int v[15005];
const int BSZ=123;
int b[BSZ+5];

int main()
{
    ifstream fin("datorii.in");
    ofstream fout("datorii.out");

    int n,m;

    fin>>n>>m;

    for(int i=0;i<n;i++)
    {
        fin>>v[i];
        b[i/BSZ]+=v[i];
    }

    for(int i=1;i<=m;i++)
    {
        int t,x,y;
        fin>>t>>x>>y;
        x--;
        //y--;
        if(t==0)
        {
            v[x]-=min(y,v[x]);
            b[y/BSZ]-=min(y,v[x]);
        }
        else
        {
            int s=0;
            y--;
            while(x%BSZ!=0 && x<=y)
            {
                s+=v[x];
                x++;
            }
            ///int k=j/BSZ;
            while(x+BSZ<y)
            {
                s+=b[x];
                x+=BSZ;
                ///k++;
            }
            while(x<=y)
            {
                s+=v[x];
                x++;
            }
            fout<<s<<'\n';
        }
    }
    fin.close();
    fout.close();
    return 0;
}