#include <queue>
#include <iostream>
 
int main() {
    std::priority_queue<char> pq;
    pq.push('z');
    pq.emplace('b');
    pq.push('c');
    pq.pop();
    std::cout << pq.top() << std::endl;
    std::cout << pq.size() << std::endl;
}