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Cod sursa(job #529034)
var a,v,b,c:array[0..15000] of longint;
n,m,i,j,x,y:longint;
f,t:text;
function suma(p:longint):longint;
begin
suma:=0;
while p>0 do
begin
suma:=suma+v[p];
dec(p,c[b[p]]);
end;
end;
procedure modifica(x,y:longint);
begin
while x<=n do
begin
v[x]:=v[x]-y;
inc(x,c[b[x]]);
end;
end;
begin
assign(f,'datorii.out');
rewrite(f);
assign(t,'datorii.in');
reset(t);
readln(t,n,m);
{ for i:=1 to n do
read(t,a[i]);
for i:=1 to 10 do
if b[i]=0 then
begin
j:=i;
while j<=n do
begin
b[j*2]:=b[j]+1;
j:=j*2;
end;
end;
c[0]:=1;
for i:=1 to 10 do
c[i]:=c[i-1]*2; }
for i:=1 to n do
v[i]:=a[i]+suma(i-1)-suma(i-c[b[i]]);
for i:=1 to m do
begin
readln(t,j,x,y);
if j=0 then modifica(x,y)
else if x=1 then writeln(f,suma(y))
else writeln(f,suma(y)-suma(x-1));
end;
close(t);
close(f);
end.