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 #define LL long long using namespace std; const LL mod=1e9+7; const int maxn=5e5+10; int n;LL t; inline int read() { int x=0,f=1;char ch=getchar(); while(ch'9'){if(ch=='-')f=-1;ch=g... 阅读全文