View Compilation Error

0_0_37510213_18641.cpp: In function 'int main()':
0_0_37510213_18641.cpp:6:3: error: 'cin' was not declared in this scope
   cin >> a;
   ^
0_0_37510213_18641.cpp:6:3: note: suggested alternative:
In file included from 0_0_37510213_18641.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_37510213_18641.cpp:11:3: error: 'cout' was not declared in this scope
   cout << tem;
   ^
0_0_37510213_18641.cpp:11:3: note: suggested alternative:
In file included from 0_0_37510213_18641.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
                  ^
0_0_37510213_18641.cpp: In function 'bool solution(int)':
0_0_37510213_18641.cpp:20:3: error: expected ';' before 'tem'
   tem /= 10;
   ^