- #include <iostream> 
-   
- using namespace std; 
-   
- class Proof { 
- public: 
-     Proof() { 
-        cout << "instance created\n"; 
-     } 
-   
-     Proof(Proof & p) { 
-        cout << "copy-cnstr\n"; 
-     } 
-   
-     Proof(Proof && p) { 
-        cout << "move-cnstr\n"; 
-     } 
- }; 
-   
- int main() { 
-     auto kek = Proof(); 
-     return 0; 
- } 
-   
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