#include <fstream>
#include <vector>

using namespace std;

ifstream cin("datorii.in");
ofstream cout("datorii.out");

int n;
vector<int> bit(100000 + 1, 0);

void update(int i, int val)
{
    while (i <= n)
    {
        bit[i] += val;
        i += (i & -i);
    }
}

int prefixSum(int i)
{
    int sum;
    sum = 0;
    while (i > 0)
    {
        sum += bit[i];
        i -= (i & -i);
    }
    return sum;
}

int rangeSum(int i, int j)
{
    return prefixSum(j) - prefixSum(i - 1);
}

int main()
{
    int m;
    cin >> n >> m;

    int i, nr;
    for (i = 1; i <= n; i++)
    {
        cin >> nr;
        update(i, nr);
    }

    int c, x, y;
    for (i = 1; i <= m; i++)
    {
        cin >> c >> x >> y;
        if (c == 0)
            update(x, -y);
        else
            cout << rangeSum(x, y) << '\n';
    }
}