View Compilation Error

0_0_25815108_27096.cpp: In function 'int main()':
0_0_25815108_27096.cpp:74:9: error: 'cout' was not declared in this scope
         cout<<(ans%mod+mod)%mod<<endl;
         ^
0_0_25815108_27096.cpp:74:9: note: suggested alternative:
In file included from 0_0_25815108_27096.cpp:3:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
0_0_25815108_27096.cpp:74:34: error: 'endl' was not declared in this scope
         cout<<(ans%mod+mod)%mod<<endl;
                                  ^
0_0_25815108_27096.cpp:74:34: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39:0,
                 from 0_0_25815108_27096.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:564:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^