///#include <iostream>
#include <fstream>

using namespace std;
const int SIZE = 1e5+10;

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

int n, m, aux;
int cer, a, b;
int v[SIZE];

int getLastBit(int n)
{
    return (n & (n ^ (n-1)));
}

void update(int pos, int val)
{
    while(pos<=n)
    {
        v[pos] += val;
        pos += getLastBit(pos);
    }
}

int query(int pos)
{
    int rez = 0, p2;
    while(pos)
    {
        p2 = getLastBit(pos);
        rez += v[pos];
        pos -= p2;
    }
    return rez;
}

int main()
{
    cin>>n>>m;
    for(int i=1; i<=n; i++)
        cin>>aux, update(i, aux);
    while(m--)
    {
        cin>>cer>>a>>b;
        if(cer) cout<<query(b) - query(a-1)<<'\n';
        else update(a, -b);
    }
    return 0;
}