#include <fstream>
using namespace std;

FILE *f=fopen("datorii.in","r");
FILE *g=fopen("datorii.out","w");

int v[1<<15];
int n,m,p,val,dela,panala,suma;

void adauga(int nod,int st,int dr)
{
    if(st==dr)
    {
        v[nod]+=val;
        return;
    }
    int mij=(st+dr)/2;
    if(p<=mij)
        adauga(2*nod,st,mij);
    else
        adauga(2*nod+1,mij+1,dr);
    v[nod]=v[2*nod]+v[2*nod+1];
}

void interogare(int nod,int st,int dr)
{
    if(dela<=st && dr<=panala)
    {
        suma+=v[nod];
        return;
    }
    int mij=(st+dr)/2;
    if(dela<=mij)
        interogare(2*nod,st,mij);
    if(mij<panala)
        interogare(2*nod+1,mij+1,dr);
}

int main()
{
    int t,a,b;
    fscanf(f,"%d%d",&n,&m);
    for(int i=1;i<=n;i++)
    {
        fscanf(f,"%d",&val);
        p=i;
        adauga(1,1,n);
    }
    for(int i=1;i<=m;i++)
    {
        fscanf(f,"%d%d%d",&t,&a,&b);
        if(t==0)
        {
            p=a; val=-b;
            adauga(1,1,n);
        }
        else
        {
            dela=a; panala=b;
            suma=0;
            interogare(1,1,n);
            fprintf(g,"%d\n",suma);
        }
    }
    fclose(f);
    fclose(g);
    return 0;
}