#include <fstream>
#include <math.h>

int main()
{
    static int a[15001], batog[15001];
    int n, m, i, k, nr, tip, x, y, t, v, b, p, q, sum, bp, bq, ep, sq;
    std::ifstream fi("datorii.in");
    std::ofstream fo("datorii.out");
    fi >> n >> m;
    for (i = 1; i <= n; i++) fi >> a[i];
    k = sqrt(n);
    nr = (n + k - 1) / k;
    for (i = 1; i <= n; i++) batog[(i - 1) / k] += a[i];
    while (m--)
    {
        fi >> tip >> x >> y;
        if (tip == 0)
        {
            t = x;
            v = y;
            int b = (t - 1) / k;
            a[t] -= v;
            batog[b] -= v;
        }
        else
        {
            p = x;
            q = y;
            sum = 0;
            bp = (p - 1) / k;
            bq = (q - 1) / k;
            if (bp == bq) for (i = p; i <= q; i++) sum += a[i];
            else
            {
                ep = (bp + 1) * k;
                for (i = p; i <= ep && i <= n; i++) sum += a[i];
                for (b = bp + 1; b <= bq - 1; b++) sum += batog[b];
                sq = bq * k + 1;
                for (i = sq; i <= q; i++) sum += a[i];
            }

            fo << sum << '\n';
        }
    }
}