#include <fstream>
#define nmax 15005
using namespace std;
FILE *fin=fopen("datorii.in","r");
FILE *fout=fopen("datorii.out","w");
int aib[nmax];
int tip;
int n, m, x, y;
void update(int poz, int x)
{
    for (int i=poz;i<=n;i+=(i&(-i)))
    {
        aib[i] -= x;
    }
}
int query(int poz)
{
    int ans = 0;
    for (int i=poz;i>=1;i-=(i&(-i)))
    {
        ans+=aib[i];
    }
    return ans;
}
int main()
{
    fscanf(fin, "%d %d",&n,&m);
    for (int i=1;i<=n;++i)
    {
        fscanf(fin,"%d",&x);
        update(i,-x);
    }
    for (int i=1;i<=m;++i)
    {
        fscanf(fin,"%d %d %d",&tip,&x,&y);
        if (tip == 0)
        {
            update(x, y);
        }
        else
        {
            fprintf(fout,"%d\n",query(y) - query(x-1));
        }
    }
    return 0;
}