#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("datorii.in");
ofstream fout("datorii.out");
int i,j,n,m,v[999999],cod,x,y,s;
int main()
{
    fin>>n>>m;
    for(i=1;i<=n;i++)fin>>v[i];
    for(i=1;i<=m;i++)
    {
        fin>>cod;
        if(cod==0)
        {
            fin>>x>>y;
            v[x]=v[x]-y;
        }
        else
        {
            fin>>x>>y;
            s=0;
            for(j=x;j<=y;j++)s=s+v[j];
            fout<<s<<endl;
        }
    }
    fin.close();
    fout.close();
    return 0;
}