#include <bits/stdc++.h>
using namespace std;
ifstream f("datorii.in");
ofstream g("datorii.out");
#define zeros(x) ( (x ^ (x - 1)) & x )
int AIB[15001],n,m,x,y,z;
void Add(int x, int quantity)
{
    int i;

    for (i = x; i <= n; i += zeros(i))
        AIB[i] += quantity;
}

int Compute(int x)
{
    int i, ret = 0;

    for (i = x; i > 0; i -= zeros(i))
        ret += AIB[i];
    return ret;
}
int main()
{
    f>>n>>m;
    for(int i=1;i<=n;i++)
    {
        f>>x;
        Add(i,x);
    }
    for(int i=1;i<=m;i++)
    {
        f>>x>>y>>z;
        if(x==0)
            Add(y,-z);
        else
            g<<Compute(z)-Compute(y-1)<<'\n';
    }
    return 0;
}