#include <queue>
#include <vector>

bool compare(int a, int b)
{
   return (a<b);
}

std::priority_queue<int, std::vector<int>, decltype(&compare)> pq1(&compare);

std::priority_queue<int,std::vector<int>, std::less<int> > pq2;

int main() {
	return 0;
}