结构体优先队列自定义优先度

bool operator ()(int &a,int &b){          return a>b;//最小值优先      } 

bool operator ()(int &a,int &b){          return a<b;//最大值优先      } 

int x;      bool operator < (const number1 &a) const {          return x>a.x;//最小值优先      }  

int x;      bool operator < (const number2 &a) const {          return x<a.x;//最大值优先      }