A
#include#define PI acos(-1.0)#define mem(a,b) memset((a),b,sizeof(a))#define TS printf("!!!\n")#define pb push_back#define inf 1e9//std::ios::sync_with_stdio(false);using namespace std;//priority_queue ,greater > que; get minconst double eps = 1.0e-10;const double EPS = 1.0e-4;typedef pair pairint;typedef long long ll;typedef unsigned long long ull;const int turn[4][2] = { { 1, 0}, { -1, 0}, { 0, 1}, { 0, -1}};//priority_queue