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Cod sursa(job #171707)
type vector=array[1..1000000] of longint;
var suma,x:vector;
n,m,i,j,k,s,ic,sf,mij:longint;
ok:boolean;
procedure Sort(var a:vector;l, r: longint);
var
i, j, x, y: longint;
begin
i := l; j := r; x := a[(l+r) DIV 2];
repeat
while a[i] < x do i := i + 1;
while x < a[j] do j := j - 1;
if i <= j then
begin
y := a[i]; a[i] := a[j]; a[j] := y;
i := i + 1; j := j - 1;
end;
until i > j;
if l < j then Sort(a,l, j);
if i < r then Sort(a,i, r);
end;
procedure afisare(p:longint);
var i,j,k,e:longint;
Begin
e:=0;
For i:=1 to n do
For j:=1 to n do
For k:=1 to n do
If (x[i]+x[j]+x[k]=suma[p]) and (e=0) then Begin
Write(x[i],' ',x[j],' ',x[k],' ');
inc(e);
break;
end;
end;
Begin
Assign(input,'loto.in');Reset(input);
Assign(output,'loto.out');Rewrite(output);
Readln(n,s);
For i:=1 to n do
Read(x[i]);
m:=0;
For i:=1 to n do
For j:=1 to n do
For k:=1 to n do
Begin
m:=m+1;
suma[m]:=x[i]+x[j]+x[k];
end;
Sort(suma,1,m);
ok:=false;
ic:=1;
sf:=m;
While ic<=sf do
Begin
mij:=(ic+sf) div 2;
If suma[ic]+suma[sf]=S then Begin
ok:=true;
afisare(ic);
afisare(sf);
ic:=sf+1;
end
else Begin
While (suma[ic]+suma[sf]>S) and (sf>=1) do dec(sf);
While (suma[ic]+suma[sf]<S) and (ic<=m) do inc(ic);
end;
{If suma[ic]+suma[sf]>S then sf:=mij-1
else ic:=mij+1;}
end;
If not ok then Write(-1);
Close(input);
Close(output);
end.