User login [Summer IOI Camp 2026. Training Contest 4.]

This is ejudge contest administration system, version 2.3.27 #663, compiled Mon Jun 30 19:02:29 2025.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.