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Cod sursa(job #930482)
var
v:array[1..500000] of integer;
bufin, bufout:array[1.. 1 shl 17] of char;
n, i, aux:integer;
f, g:text;
procedure qsort (st, dr:longint);
var s, d, p:longint;
begin
if dr-st>=1 then
begin
s:=st; d:=dr;
p:= v[random (dr-st)+st];
while s< d do
begin
while v[s]<p do s:=s+1;
while v[d]>p do d:=d-1;
if s<=d then
begin
aux:=v[s]; v[s]:=v[d]; v[d]:=aux;
s:=s+1; d:=d-1;
end;
end;
if st<d then qsort (st, d);
if s<dr then qsort (s, dr);
end;
end;
begin
assign (f, 'algsort.in'); settextbuf (f, bufin); reset (f);
assign (g, 'algsort.out'); settextbuf (g, bufout); rewrite (g);
read (f, n);
for i:= 1 to n do read (f, v[i]);
qsort (1, n);
for i:= 1 to n do write (g, v[i], ' ');
close (f); close (g);
end.