[BoRoV]

Код:

var
  count, n, best: integer;
  iq: array of integer;
  f: TextFile;

begin
  AssignFile(f, 'input.txt');
  Reset(f);
  SetLength(iq, 32001);
  for n := 0 to 32000 do
    iq[n] := 0;
  count := 0;
  while not Eof(f) do
  begin
    Readln(f, n);
    inc(iq[n]);
    inc(count);
  end;
  CloseFile(f);

  count := count div 2;
  best := 0;
  for n := 0 to 32000 do
    if iq[n] >= count then
      if iq[n] > best then
        best := iq[n];

  AssignFile(f, 'output.txt');
  Rewrite(f);
  if best <> 0 then
    Writeln(f, best)
  else
    Writeln(f, 'НЕТ РЕШЕНИЯ');

  CloseFile(f);
  Readln;
end.