摘要:
```cpp #include #include using namespace std; #define R register #define LL long long const int inf=0x3f3f3f3f; const int MAXN=4e6+10; inline int read() { char a=getchar(); int x=0,f=1; for(;a>'9'||a= 阅读全文
摘要:
```cpp #include #include #include #include #include using namespace std; #define R register #define LL long long const int inf=0x3f3f3f3f; const int MAXN=4e6+10; const double PI=3.14159265358979323846 阅读全文