![BZOJ3295: [Cqoi2011]动态逆序对（带修主席树）](https://www.shuijiaxian.com/files_image/reation/bcimg2.png)
BZOJ3295: [Cqoi2011]动态逆序对（带修主席树）
3295: [Cqoi2011]动态逆序对 **Time Limit: 10 Sec Memory Limit: 128 MB Description 对于序列A，它的逆序对数定义为满足i<ji<ji(1,5,3,4,2)(1,3,4,2)(3,4,2)(3,2)(3)(1,5,3,4,2)(1,3,4,2)(3,4,2)(3,2)(3)(1,5,3,4,2)...
