#include <iostream>
#include <fstream>

using namespace std;
ifstream in("datorii.in");
ofstream out("datorii.out");
int v[16000];

void intrx()
{
    int o,x,y,i,t=0;
    in >> o >> x >> y;
    if(!o) v[x]-=y;
    else
    {
        for(i=x;i<=y;i++) t+=v[i];
        out << t << endl;
    }
}

int main()
{
    int n,m,i;
    in >> n >> m;
    for(i=1;i<=n;i++) in >> v[i];
    for(i=0;i<m;i++) intrx();

    return 0;
}