#include <fstream>
#include <iostream>
#include <vector>
using namespace std;
ifstream fin("datorii.in");
ofstream fout("datorii.out");
int aib[15005];
int n, m;
int ub(int x)
{
    return x & (-x);
}
int sum(int x)
{
    int s = 0;
    for (int i = x; i >= 1; i -= ub(i))
    {
        s += aib[i];
    }
    return s;
}
void add(int x, int y)
{
    for (int i = x; i <= n; i += ub(i))
    {
        aib[i] += y;
    }
}
int main()
{

    fin >> n >> m;
    int v;
    for (int i = 1; i <= n; i++)
    {
        fin >> v;
        add(i, v);
    }
    for (int i = 0; i < m; i++)
    {
        int x, a, b;
        fin >> x >> a >> b;
        if (x == 0)
        {
            add(a, -b);
        }
        else
        {
            fout << sum(b) - sum(a - 1) << '\n';
        }
    }
    return 0;
}