View Compilation Error

0_0_14156182_10948.cpp:5:1: error: 'vector' does not name a type
 vector<int> mobius;
 ^
0_0_14156182_10948.cpp: In function 'void rong()':
0_0_14156182_10948.cpp:11:1: error: 'mobius' was not declared in this scope
 mobius.clear();
 ^
0_0_14156182_10948.cpp: In function 'll get(ll)':
0_0_14156182_10948.cpp:43:22: error: 'mobius' was not declared in this scope
        for(int i=0;i<mobius.size();i++)
                      ^
0_0_14156182_10948.cpp: In function 'int main()':
0_0_14156182_10948.cpp:69:1: error: 'cin' was not declared in this scope
 cin>>T;
 ^
0_0_14156182_10948.cpp:69:1: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:74:0,
                 from 0_0_14156182_10948.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^