#include <iostream>
#include <fstream>
#include <vector>

using namespace std;
int n;
vector <int> bit(100005, 0);
void update(int i, int val)
{
    while(i<=n)
    {
        bit[i]+=val;
        i+=(i&-i);
    }
}
int prefixSum(int i)
{
    int sum;
    sum=0;
    while(i>0)
    {
        sum+=bit[i];
        i-=(i&-i);
    }
    return sum;
}
int rangeSum(int i, int j)
{
    return prefixSum(j)-prefixSum(i-1);
}
int main()
{
    //ifstream cin("datorii.in");
    //ofstream cout("datorii.out");
    int m,i,a,x,y;
    cin>>n>>m;
    for(i=1;i<=n;i++)
    {
        cin>>a;
        update(i, a);
    }

    for(i=1;i<=n;i++)
    {
        cin>>a>>x>>y;
        if(a==0)
            update(x, -y);
        else
            cout<<rangeSum(x, y)<<'\n';
    }

    return 0;
}