#include <fstream>

using namespace std;
ifstream f("datorii.in");
ofstream g("datorii.out");
int n,aib[15001],m,cif,a,b,x;
void adun(int x,int val)
{
    int i;
    for(i=x;i<=n;i+=i&(-i))
        aib[i]+=val;
}
int suma(int x)
{
    int s=0,i;
    for(i=x;i>=1;i-=i&(-i))
        s+=aib[i];
    return s;
}
int main()
{
    int i;
    f>>n>>m;
    for(i=1;i<=n;i++)
        f>>x,adun(i,x);
    for(i=1;i<=m;i++)
    {
        f>>cif>>a>>b;
        if(cif==0) adun(a,-b);
        else g<<suma(b)-suma(a-1)<<'\n';
    }
    return 0;
}