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View Compilation Error

0_0_38700588_4188.cpp: In function 'void solve()':
0_0_38700588_4188.cpp:46:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   46 |     cin >> n;
      |     ^~~
      |     std::cin
In file included from .\stdc++.h:146:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
0_0_38700588_4188.cpp:61:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   61 |     cout << ans * qmi(n, mod - 2) % mod << endl;
      |     ^~~~
      |     std::cout
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_38700588_4188.cpp:61:44: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   61 |     cout << ans * qmi(n, mod - 2) % mod << 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)
      |     ^~~~


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