var     a:array[1..15000] of integer;
        v:array[1..15000] of longint;
        n,x,y,j,poz:integer;
        m,s,i: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);
            poz:=x;
            while poz<=n do
              begin
                v[poz]:=v[poz]-y;
                poz:=poz+(poz xor (poz and (poz-1)));
              end;
          end;
      1:  begin
            readln(t,x,y);
            s:=0;
            poz:=y;
            while poz>0 do
              begin
                s:=s+v[poz];
                poz:=poz-(poz xor (poz and (poz-1)));
              end;
            poz:=x-1;
            while poz>0 do
              begin
                s:=s-v[poz];
                poz:=poz-(poz xor (poz and (poz-1)));
              end;
            writeln(f,s);
          end;
      end;
    end;
  close(t);
  close(f);
end.