#include <iostream>
#include <fstream>

using namespace std;

ifstream fin ("datorii.in");
ofstream fout ("datorii.out");

int n, m;
int v[15001], aib[15001];
void adaug (int x, int val)
{
    int i;
    for(i=x; i<=n; i+=i&(-i))
    {
        aib[i]+=val;
    }
}
int suma(int x)
{
    int i, s=0;
    for(i=x; i>=1; i-=i&(-i))
    {
        s+=aib[i];
    }
    return s;
}
int main()
{
    int i, cerinta, x, y;
    fin>>n>>m;
    for(i=1; i<=n; i++)
    {
        fin>>v[i];
        adaug(i, v[i]);
    }
    for(i=1; i<=m; i++)
    {
        fin>>cerinta>>x>>y;
        if(cerinta==0)
        {
            adaug(x, -y);
        }
        else
        {
            fout<<suma(y)-suma(x-1)<<"\n";
        }
    }
}