#include <iostream>
#include <fstream>
using namespace std;

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


#define MAX 15010

int x[MAX], n;

void scade(int p, int v)
{
    while(p<=n)
    {
        x[p]-=v;
        p+=(p&(-p));
    }
}

int f(int p)
{
    int s=0;
    while(p)
    {
        s+=x[p];
        p-=(p&(-p));
    }
    return s;
}

void achitare(int a, int b)
{
    fout<<f(b)-f(a-1)<<"\n";
}

int main()
{
    int m, i, a, b, c;
    fin>>n>>m;
    for(i=1;i<=n;i++)
    {
        fin>>a;
        scade(i,-a);
    }
    for(i=1;i<=m;i++)
    {
        fin>>a>>b>>c;
        if(a)
            achitare(b, c);
        else
            scade(b,c);
    }
    return 0;
}