#include <fstream>
using namespace std;

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

int n, m;
int aib[15000];
int v, z, x, s, s1, s2;

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

int Sum(int poz)
{
    int sum = 0;
    for ( int i = poz; i > 0; i -= i & -i )
        sum += aib[i];
    return sum;
}


int main()
{
    is >> n >> m;
    for ( int i = 1; i <= n; ++i )
    {
        is >> v;
        Update(i, v);
    }

    for ( int i = 1; i <= m; ++i )
    {
        is >> x;
        if ( x == 0 )
        {
            is >> z >> s;
            s *= -1;
            Update(z, s);
        }
        if ( x == 1 )
        {
            is >> s1 >> s2;
            os << Sum(s2) - Sum(s1-1) << '\n';
        }
    }



    is.close();
    os.close();
    return 0;
}