-     #include <stack> 
-     #include <string> 
-     #include <iostream> 
-   
-     int main()  
-     { 
-         std::string temp; 
-         std::stack<std::string> stk; 
-         while (std::cin >> temp) 
-             stk.push(temp); 
-         while (!stk.empty()) 
-         { 
-           std::cout << stk.top() << " "; 
-           stk.pop(); 
-         } 
-     }   
-   
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