#include <bits/stdc++.h>
#define dz(x) ((x^(x-1))&x)
#define nmax 15005
using namespace std;
ifstream fin("datorii.in");
ofstream fout("datorii.out");
int aib[nmax],n,i,t,x,y,m;
int query(int x)
{
    int i,ret=0;
    for(i=x;i>0;i-=dz(i))ret+=aib[i];
    return ret;
}
void update(int x, int val)
{
    int i;
    for(i=x;i<=n;i+=dz(i))aib[i]+=val;
}
int main()
{
    fin>>n>>m;
    for(i=1;i<=n;i++)
    {
        fin>>x;
        update(i,x);
    }
    while(m--)
    {
        fin>>t>>x>>y;
        if(t==0)update(x,-y);
        else fout<<query(y)-query(x-1)<<"\n";
    }
    return 0;
}