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Cod sursa(job #552702)
var v:array[1..500000] of int64;
i, j, m, n:longint;
aux:int64;
f, g:text;
procedure qsort(q1, q2:integer);
var st, dr, x:integer;
begin
if q1<q2 then
begin
st:= q1; dr:=q2;
x:=v[q1];
while st<dr do
begin
while (st<dr) and (v[dr]>=x) do dr:=dr-1;
v[st]:=v[dr];
while (st<dr) and (v[st]<=x) do st:=st+1;
v[dr]:=v[st];
end;
v[st]:=x;
qsort(q1, st-1);
qsort(st+1, q2);
end;
end;
begin
assign (f, 'algsort.in'); reset (f);
assign (g, 'algsort.out'); 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.