zoj2112 主席树动态第k大 ( 参考资料链接) 参考链接: http://blog.csdn.net/acm_cxlove/article/details/8565309 http://www.cnblogs.com/Rlemon/archive/2013/05/24/3096264.html http://seter.is-programmer.com/posts/31907.html http://blog.csdn.net/metalseed/article/details/8045038