#include <fstream>
#define zeros(x) ((x^(x-1))&x)
using namespace std;
ifstream in("datorii.in");
ofstream out("datorii.out");
int aib[15001];
int n,m;
void add (int poz, int x)
{
    for (int i = poz; i < n; i += zeros(i))
    {
        aib[i] += x;
    }
}
int compute (int poz)
{
    int ans = 0;
    for (int i = poz; i > 0; i -= zeros(i))
    {
        ans += aib[i];
    }
    return ans;
}
int main()
{
    int i,a,x,y,ans;
    in>>n>>m;
    n++;
    for (i = 1; i < n; i++)
    {
        in >> x;
        add (i, x);
    }
    for (i = 0; i < m; i++)
    {
        in >>a>> x >> y;
        if (a==0)
        {
            add (x, -y);
        }
        else
        {
            ans = compute (y) - compute(x - 1);
            out << ans << '\n';
        }
    }
    return 0;
}