#include <fstream>
#include <vector>

using namespace std;

ifstream is("datorii.in");
ofstream os("datorii.out");

using VI = vector<int>;

int n, m;
VI a;

void Read();
void Update(int poz, int val);
int Sum(int poz);

int main()
{
    Read();
    int t, x, y;
    while ( m-- )
    {
        is >> t >> x >> y;
        if ( !t )
            Update(x, -y);
        else
            os << Sum(y) - Sum(x - 1) << "\n";
    }
    is.close();
    os.close();
    return 0;
}

int Sum(int poz)
{
    int s = 0;
    for ( int i = poz; i; i -= i & -i )
        s += a[i];
    return s;
}

void Update(int poz, int val)
{
    for ( int i = poz; i <= n; i += i & -i )
        a[i] += val;
}

void Read()
{
    is >> n >> m;
    a = VI(n + 1);
    int x;
    for ( int i = 1; i <= n; ++i )
    {
        is >> x;
        Update(i, x);
    }
}