hdu6703专题

array(2019CCPC网络预选赛 hdu6703主席树+set)主席树求大于等于k的最小值

Problem Description You are given an array a1,a2,…,an(∀i∈[1,n],1≤ai≤n). Initially, each element of the array is unique. Moreover, there are m instructions. Each instruction is in one of the followin