#include <iostream>
#include <fstream>
#include <vector>
using namespace std;

vector<int> v;

int h(int x) {
    return -x&x;
}

void add(int x, int y) {
    for(int i=x;i<(int)v.size();i+=h(i)) v[i] += y;
}

int sum(int x) {
    if(x==0) return 0;
    return v[x]+sum(x-h(x));
}

int main()
{
    int n,m;
    ifstream f("datorii.in");
    ofstream fout("datorii.out");
    f>>n>>m;
    int c,x,y;
    v.resize(n+1,0);
    for(int i=1;i<=n;i++) {
        f>>c;
        add(i,c);
    }
    while(m-->0) {
        f>>c>>x>>y;
        if(c==0) add(x,(-1)*y);
        else fout<<sum(y)-sum(x-1)<<endl;
    }
    return 0;
}