var     a,v:array[0..15000] of word;
        n,x:word;
        m,i,j,y,s:longint;
        f,t:text;

begin
  assign(f,'datorii.out');
  rewrite(f);
  assign(t,'datorii.in');
  reset(t);
  readln(t,n,m);

  for i:=1 to n do
    begin
      read(t,a[i]);
      for j:=i-(i xor (i and (i-1)))+1 to i do
      v[i]:=v[i]+a[j];
    end;

  for i:=1 to m do
    begin
      read(t,j);
      case j of
      0:  begin
            readln(t,x,y);
            while x<=n do
              begin
                v[x]:=v[x]-y;
                x:=x+(x xor (x and (x-1)));
              end;
          end;
      1:  begin
            readln(t,x,y);
            s:=0;
            while y>0 do
              begin
                s:=s+v[y];
                y:=y-(y xor (y and (y-1)));
              end;
            x:=x-1;
            while x>0 do
              begin
                s:=s-v[x];
                x:=x-(x xor (x and (x-1)));
              end;
            writeln(f,s);
          end;
      end;
    end;
  close(t);
  close(f);
end.