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#pragma once 
 
#include "fwd.h"
#include "deque.h" 
#include "vector.h" 
#include "utility.h" 
 
#include <util/str_stl.h> 
 
#include <queue> 
 
template <class T, class S>
class TQueue: public std::queue<T, S> {
    using TBase = std::queue<T, S>; 
 
public: 
    using TBase::TBase;
 
    inline explicit operator bool() const noexcept {
        return !this->empty();
    }

    inline void clear() { 
        this->c.clear(); 
    } 

    inline S& Container() {
        return this->c;
    }

    inline const S& Container() const {
        return this->c;
    }
}; 
 
template <class T, class S, class C>
class TPriorityQueue: public std::priority_queue<T, S, C> {
    using TBase = std::priority_queue<T, S, C>;
 
public: 
    using TBase::TBase;
 
    inline explicit operator bool() const noexcept {
        return !this->empty();
    }

    inline void clear() { 
        this->c.clear(); 
    } 
 
    inline S& Container() {
        return this->c;
    }

    inline const S& Container() const {
        return this->c;
    }
};