摘要：#include #define LL long long using namespace std; const LL mod=1e9+7; const int maxn=1e6+10; #define lowbit(x) (x&(-x)) struct BIT { LL**a;int n,m; BIT(){a=0;n=m=-1;} BIT(int n,int m):n... 阅读全文

摘要：#include using namespace std; #define LL long long const int maxn=2e5+10; struct BIT //binary index tree { int t[maxn],n; int a[maxn]; #define lowbit(x) (x&(-x)) void init(int n_) ... 阅读全文