#include <fstream>
using namespace std;
#define MAX_N 15001

int aib[MAX_N];
int n;

inline int zerouri(int x)
{
    return ((x & (x - 1)) ^ x);
}

void adauga(int pos, int val)
{
    for (int i=pos;i<=n;i+=zerouri(i))
        aib[i]+=val;
}

int interogare(int pos)
{
    int suma=0;
    for (int i=pos;i>0;i-=zerouri(i))
        suma+=aib[i];
    return suma;
}

int main()
{
    ifstream f("datorii.in");
    ofstream g("datorii.out");
    int m;
    f>>n>>m;
    int i;
    for(i=1;i<=n;++i)
    {
        int a;
        f>>a;
        adauga(i,a);
    }
    int operatie,x,y;
    for(i=1;i<=m;++i)
    {
        f>>operatie>>x>>y;
        if(operatie)
        {
            if(!x)
                g<<interogare(y)<<endl;
            else
                g<<interogare(y)-interogare(x-1)<<endl;
        }
        else
            adauga(x,0-y);
    }
    f.close();
    g.close();
    return 0;
}