19年省赛第二次练习(2019/4/29)
1.反素数
https://www.luogu.org/problemnew/show/P1463
2.仪仗队
https://www.luogu.org/problemnew/show/P2158
3.小木棍 [数据加强版]
https://www.luogu.org/problemnew/show/P1120
4.关路灯
https://www.luogu.org/problemnew/show/P1220
5.银河英雄传说
https://www.luogu.org/problemnew/show/P1196
6.封锁阳光大学
https://www.luogu.org/problemnew/show/P1330