#include <fstream>

using namespace std;

const int N = 15000;
const int L = 16;

int aib[N], n;

void actualizare(int p, int val, int semn)
{
    while (p <= n)
    {
        aib[p] += semn*val;
        p += (p & (-p));
    }
}

int interogare(int p)
{
    int sum = 0;
    while (p != 0)
    {
        sum += aib[p];
        p -= (p & (-p));
    }
    return sum;
}

int main()
{
    ifstream in("datorii.in");
    ofstream out("datorii.out");
    int m;
    in >> n >> m;
    for (int i = 1; i <= n; i++)
    {
        int x;
        in >> x;
        actualizare(i, x, 1);
    }
    for (int i = 0; i < m; i++)
    {
        int tip;
        in >> tip;
        if (tip == 0)
        {
            int t, v;
            in >> t >> v;
            actualizare(t, v, -1);
        }
        else
        {
            int p, q;
            in >> p >> q;
            out << interogare(q) - interogare(p - 1) << "\n";
        }
    }
    in.close();
    out.close();
    return 0;
}