#include <fstream>

using namespace std;

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

int n, m;
int aib[15001];

int lsb(int n)
{
    return n & (-n);
}

void Build(int x, int value)
{
    for(int i = x; i <= n; i += lsb(i))
        aib[i] += value;
}

void Update(int x, int value)
{
    for(int i = x; i <= n; i += lsb(i))
        aib[i] = max(0, aib[i] - value);
}

int Query(int x)
{
    int sum = 0;
    for(int i = x; i > 0; i -= lsb(i))
        sum += aib[i];
    return sum;
}

int main()
{
    cin >> n >> m;
    for(int i = 1; i <= n; i++)
    {
        int x;
        cin >> x;
        Build(i, x);
    }

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


    return 0;
}