Cod sursa(job #196626)

Utilizator AndreiDDiaconeasa Andrei AndreiD Data 27 iunie 2008 15:30:26
Problema Loto Scor 100
Compilator fpc Status done
Runda Arhiva de probleme Marime 1.38 kb
Type list=array[1..1000000] of longint;
var f:text;
suma,x:list;
n,m,i,j,k,s,st,dr,mij:longint;
ok:boolean;
procedure Sort(var a:list; 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,q:longint;
Begin
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]) then begin
                  Write(f,x[i],' ',x[j],' ',x[k],' ');
                   exit;
                    end;
end;
begin
assign(f,'loto.in');reset(f);
readln(f,n,s);
for i:=1 to n do read(f,x[i]);
close(f);
m:=0;
for i:=1 to n do
 for j:=1 to n do
    for k:=1 to n do begin
inc(m);
    suma[m]:=x[i]+x[j]+x[k];
   end;
Sort(suma,1,m);
ok:=false;
st:=1;
dr:=m;
assign(f,'loto.out');rewrite(f);
while st<=dr do begin
mij:=(st+dr) div 2;
if suma[st]+suma[dr]=s then begin
ok:=true;
afisare(st);
afisare(dr);
st:=dr+1;
                      end
else begin
while (suma[st]+suma[dr]>s) and (dr>=1) do dec(dr);
while (suma[st]+suma[dr]<s) and (st<=m) do inc(st);
end;
end;
if not ok then write(f,-1);
close(f);
end.