#include <fstream>
#define zeros(x) (x^(x-1)&x)

using namespace std;

ifstream f("datorii.in");
ofstream g("datorii.out");

int a[15000];

void Adauga(int x, int y, int n)
{
    int i;
    for(i=x; i<=n; i+=zeros(i))
    {
        a[i]+=y;
    }
}

void Sterge(int x, int y, int n)
{
    int i;
    for(i=x; i<=n; i+=zeros(i))
    {
        a[i]-=y;
    }
}

int Suma(int x)
{
    int i, s=0;
    for(i=x; i>0; i-=zeros(i))
    {
        s+=a[i];
    }
    return s;
}

int sum(int x, int y)
{
    return Suma(y)-Suma(x-1);
}

void citire_si_executare()
{
    int n, m;
    int o, x, y;
    f>>n>>m;
    for(int i=1; i<=n; ++i)
    {
        f>>x;
        Adauga(i, x, n);
    }
    for(int i=1; i<=m; ++i)
    {
        f>>o>>x>>y;
        if(o==0)
        {
            Sterge(x, y, n);
        }
        else
        {
            g<<sum(x, y)<<"\n";
        }
    }
}

int main()
{
    citire_si_executare();
    return 0;
}