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)
| ^~~~
|