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View Compilation Error

0_0_36403876_17975.cpp:2:7: error: expected nested-name-specifier before 'name'
 using name std;
       ^
0_0_36403876_17975.cpp: In function 'int main()':
0_0_36403876_17975.cpp:6:11: error: 'cin' was not declared in this scope
     while(cin >> a >> b)
           ^
0_0_36403876_17975.cpp:6:11: note: suggested alternative:
In file included from 0_0_36403876_17975.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
0_0_36403876_17975.cpp:7:9: error: 'cout' was not declared in this scope
         cout << a + b;
         ^
0_0_36403876_17975.cpp:7:9: note: suggested alternative:
In file included from 0_0_36403876_17975.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^


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