#include <iostream>
#include <fstream>

std::ifstream in("datorii.in");
std::ofstream out("datorii.out");

const int N=15000;

int v[N+1];
int AIB[N+2];

int n, m;

void adaug(int poz, int delta)
{
    int init=poz+1;
    do
    {
        AIB[init]+=delta;
        init=(init|(init-1))+1;
    }
    while(init<=n);
}

int sum(int poz)
{
   if(poz==0) return 0;

   else return AIB[poz] + sum(poz&(poz-1));
}

int main()
{
    int q, x, y;

    in>>n>>m;
    for(int i=1; i<=n; i++)
    {
        in>>v[i];
        adaug(i, v[i]);
    }
    for(int i=1; i<=m; i++)
    {
        in>>q>>x>>y;
        if(q==0)
        {
           adaug(x, -y);
        }
        else
        {
            out<<sum(y+1)-sum(x)<<"\n";
        }
    }
}