摘要: #include#include#include#define NN 2500000using namespace std;typedef long long LL;struct node{ LL l,r,sum,flag;} N[NN];void build(LL l,LL r,LL i)... 阅读全文
posted @ 2016-03-15 15:29 Code-dream 阅读(157) 评论(0) 推荐(0) 编辑