摘要:
#include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #define lson rt<<1, l, mid #define rson rt<<1|1, mid+1, r using namespace std; const int maxn = 500100; int P; typedef long lo 阅读全文
posted @ 2019-08-19 10:31
izcat
阅读(157)
评论(0)
推荐(0)