#include <iostream>
#include <unordered_map>
#include <string>
#include <vector>
#include <cstring>
#include <memory>
#include <algorithm>
#include <map>

using namespace std;

class A {
public:
    A() {
        cout << "A()" << endl;
    }

    ~A() {
        cout << "~A()" << endl;
    }
};

class B: public A {
public:
    B(){
        cout << "B()" << endl;
    };

    ~B() {
        cout << "~B()" << endl;
    }
};

class C: public B {
public:
    C() {
        cout << "C()" << endl;
    }

    ~C() {
        cout << "~C()" << endl;
    }
};

int main() {
    C c;
}