#include <fstream>
#include <vector>
using namespace std;
ifstream fin ("datorii.in");
ofstream fout ("datorii.out");
int n,m,ve[15001];
bool v;
int t,v1;
void eliminare ()
{
    ve[t]-=v1;
}
void raspuns ()
{
    int s=0;
    for (int j=t;j<=v1;++j)
        s+=ve[j];
    fout<<s<<'\n';
}
void citire ()
{
    fin>>n>>m;
    for (int i=1;i<=n;++i)
        fin>>ve[i];
    for (int i=1;i<=m;++i)
    {
        fin>>v>>t>>v1;
        if (v==0)
            eliminare();
        else raspuns();
    }
}
int main()
{
    citire();
    return 0;
}