#include <memory>
#include <iostream>
#include <string>
using namespace std;
 
struct Node {
  shared_ptr<Node> next;  string value;
  ~Node() { cout << "destroyed object with value " << value << endl; }};int main(){  shared_ptr<Node> a = make_shared<Node>();  shared_ptr<Node> b = make_shared<Node>();  shared_ptr<Node> c = make_shared<Node>();  a->value = "a";  b->value = "b";  c->value = "c";  a->next = b;   b->next = c;   c->next = a;   cout << "Done!\n";}

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