#include <fstream>
#define zeros(x)((x^(x-1))&x)
#define NMAX 15005
int aib[NMAX];
int n;
void Add(int x,int val)
{
    for(int i=x; i<=n; i+=zeros(i))
        aib[i]+=val;
}
int Compute(int x)
{
    int suma=0;
    for(int i=x; i; i-=zeros(i))
        suma+=aib[i];
    return suma;
}
using namespace std;
ifstream cin("datorii.in");
ofstream cout("datorii.out");
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie();
    int m,a,q,x,y;
    cin>>n>>m;
    for(int i=1; i<=n; ++i)
    {
        cin>>a;
        Add(i,a);
    }
    for(int i=1; i<=m; ++i)
    {
        cin>>q;
        if(q==0)
        {
            cin>>x>>a;
            Add(x,-a);
        }
        else if(q==1)
        {
            cin>>x>>y;
            cout<<Compute(y)-Compute(x-1)<<"\n";
        }
    }
    return 0;
}