关闭防火墙
查看防火墙状态
[root@localhost ~]# systemctl status firewalld临时关闭（下次开机启动，自动启动防火墙）
[root@localhost ~]# systemctl stop firewalld永久关闭防火墙（开机启动时不在启动）
[root@localhost ~]# systemctl disable firewalld关闭SElinux
查看selinux状态
[root@localhost ~]# getenforce Enforcing 表示启动临时关闭
[root@localhost ~]# setenforce usage: setenforce [ Enforcing | Permissive | 1 | 0 ] 1表示启动，0表示关闭[root@localhost ~]# setenforce 0 临时关闭[root@localhost ~]# getenforce 查看状态Permissive 关闭状态永久关闭（修改配置文件，即可永久关闭）
[root@localhost ~]# vi /etc/selinux/config # This file controls the state of SELinux on the system.# SELINUX= can take one of these three values:# enforcing - SELinux security policy is enforced.# permissive - SELinux prints warnings instead of enforcing.# disabled - No SELinux policy is loaded.SELINUX=enforcing 修改为"SELINUX=disabled"# SELINUXTYPE= can take one of three values:# targeted - Targeted processes are protected,# minimum - Modification of targeted policy. Only selected processes are protected.# mls - Multi Level Security protection.SELINUXTYPE=targeted
![[BZOJ3173][Tjoi2013]最长上升子序列](http://pic.xiahunao.cn/[BZOJ3173][Tjoi2013]最长上升子序列)
原理)
