Custom comparator in priority Queue

class mycmp{
  public:
	bool operator()(pair<int, string>& a, pair<int, string>& b)
  	{
    	return a.first > b.first;
    // can write more code if required. depends upon requirement.
  	}
};

int main(){
  priority_queue<pair<int,string>,vector<pair<int,string>,mycmp>pq;
}