program checker;

{$APPTYPE CONSOLE}

uses
  SysUtils,
{$IFDEF MSWINDOWS}
  unJudge17 in '..\utils\unJudge17.pas';
{$ELSE}
  unJudge17 in '../utils/unJudge17.pas';
{$ENDIF}

var
  a, b, s: Integer;
begin
  InputTxt.ReadLongInt(a);
  InputTxt.NextLine;
  InputTxt.ReadLongInt(b);
  InputTxt.MustBeEOF;
  OutputTxt.ReadLongInt(s);
  OutputTxt.MustBeEOF;
  if a + b <> s then VRejectWA(
    Format('%d expected, %d found', [a + b, s]));
  VAccept;
end.