#include <fstream>

using namespace std;
int aib[100005];
int query(int pos)
{
    int s = 0;
    while(pos>0)
    {
        s = s + aib[pos];
        pos = pos & (pos - 1);
    }
    return s;
}

void update(int pos,int val,int n)
{
    while(pos <= n)
    {
        aib[pos] = aib[pos] + val;
        pos = pos + (pos ^ (pos & (pos - 1)));
    }
}

int main()
{
    ifstream cin("datorii.in");
    ofstream cout("datorii.out");
    int n, m;
    cin >> n >> m;
    for(int i = 1; i <= n; i ++)
    {
        int x;
        cin >> x;
        update(i, x, n);
    }
    for(int i = 0; i < m; i ++)
    {
        int x, y, cer;
        cin >> cer;
        cin >> x >> y;
        if(!cer)
        {
            y*= -1;
            update(x, y, n);
        }
        else
        {
            cout << query(y) - query(x - 1) << '\n';
        }
    }
    return 0;
}