2018.3-2018.6
Problems : http://www.bnu.edu.cn/v3/contest_show.php?cid=9336
password : 12345678
Problems : http://www.bnuoj.com/v3/contest_show.php?cid=9348
password : 12345678
Problems : http://www.bnuoj.com/v3/contest_show.php?cid=9360
password : 12345678
on vacation
Problems : http://acm.bnu.edu.cn/v3/contest_show.php?cid=9372
password : 12345678
Problems : http://www.bnuoj.com/v3/contest_show.php?cid=9381
http://www.bnuoj.com/v3/contest_show.php?cid=9384
on training
Problems : http://acm.bnu.edu.cn/v3/contest_show.php?cid=9408
http://acm.bnu.edu.cn/v3/contest_show.php?cid=9411
Problems : http://acm.bnu.edu.cn/v3/contest_show.php?cid=9417
Problems : http://acm.bnu.edu.cn/v3/contest_show.php?cid=9427
Problems : http://acm.bnu.edu.cn/v3/contest_show.php?cid=9435