#include <fstream>
#include <vector>
using namespace std;

ifstream is("datorii.in");
ofstream os("datorii.out");

int n, m;
int op;
int aib[15001];
int suma;

void Update(int poz, int v);
int Query(int poz);

int main()
{
    is >> n >> m;
    int v, x, y;
    for(int i = 1; i <= n; ++i)
    {
        is >> v;
        Update(i, v);
    }
    for(int i = 1; i <= m; ++i)
    {
        is >> op;
        if(op == 1)
        {
            is >> x >> y;
            os << Query(y) - Query(x-1) << '\n';
        }
        if(op == 0)
        {
            is >> x >> y;
            y *= (-1);
            Update(x, y);
        }
    }
    is.close();
    os.close();
    return 0;
}

void Update(int poz, int v)
{
    for(int i = poz; i <= n;i += i& -i)
        aib[i] += v;
}

int Query(int poz)
{
    suma = 0;
    for(int i = poz; i; i -= i & -i)
        suma += aib[i];
    return suma;
}