/*
Procedures and Programs for Galois-Field Arithmetic and Reed-Solomon Coding.  
Copyright (C) 2003 James S. Plank

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

---------------------------------------------------------------------------
Please see http://web.eecs.utk.edu/~jplank/plank/gflib
for instruction on how to use this library.

Jim Plank
plank@cs.utk.edu
http://web.eecs.utk.edu/~jplank

Associate Professor
Department of Computer Science
University of Tennessee
203 Claxton Complex
1122 Volunteer Blvd.
Knoxville, TN 37996-3450

     865-974-4397
Fax: 865-974-4404

$Revision: 1.2 $
*/

#include <stdio.h>

main(argc, argv)
int argc;
char **argv;
{
  int n, m, i;

  m = 0;
  for (i = 1; i < argc; i++) {
    n = atoi(argv[i]);
    m = m ^ n;
  }
  printf("%d\n", m);
}