#include <fstream>
#define ub(x) (x&(-x))

using namespace std;

ifstream f ("datorii.in");
ofstream g ("datorii.out");

int n, m, x, caz, t, v;

int aib[15002];

void update (int poz, int val, int caz)
{
    for (int i = poz; i <= n; i += ub(i))
    {
        if (caz == 0) aib[i] += val;
        else aib[i] -= val;
    }
}

int Sum (int poz)
{
    int S = 0;
    for (int i = poz; i > 0; i -= ub(i))
    {
        S = S + aib[i];
    }
    return S;
}
int main()
{
    f >> n >> m;

    for (int i = 1; i <= n; i++)
    {
        f >> x;
        update(i, x, 0);
    }

    for (int i = 1; i <= m; i++)
    {
        f >> caz;
        if (caz == 0)
        {
            f >> t >> v;
            update(t, v, 1);
        }
        else
        {
            f >> t >> v;
            g << Sum(v) - Sum(t-1) << '\n';
        }
    }
    return 0;
}