View Compilation Error

0_0_38901200_23891.cpp: In function 'int main()':
0_0_38901200_23891.cpp:9:6: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |     }cout<<sum<<"\n"<<endl;
      |      ^~~~
      |      std::cout
In file included from .\stdc++.h:146:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
0_0_38901200_23891.cpp:9:23: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    9 |     }cout<<sum<<"\n"<<endl;
      |                       ^~~~
      |                       std::endl
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/unique_ptr.h:42,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/memory:78,
                 from .\stdc++.h:56:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/ostream:735:5: note: 'std::endl' declared here
  735 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~