#include <fstream>

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

int aib[15005];
    int n,m;
void update(int p, int val)
{
    for(; p<=n; p+=(p&-p))
        aib[p]+=val;
}
int sum(int pos)
{
    int s;
    for(s=0; pos>0; pos-=(pos&-pos))
        s+=aib[pos];
    return s;
}
int main()
{
    fin>>n>>m;
    for(int i=1; i<=n; i++)
    {
        int x;
        fin>>x;
        update(i,x);
    }
    while(m--)
    {
        int op,x,y;
        fin>>op>>x>>y;
        if(op==0)
            update(x,-y);
        else
            fout<<sum(y)-sum(x-1)<<"\n";
    }
    return 0;
}