View Compilation Error

0_0_23309385_26396.cpp: In function 'void run()':
0_0_23309385_26396.cpp:34:34: error: 'sort' was not declared in this scope
     sort(dict.begin(), dict.end());
                                  ^
0_0_23309385_26396.cpp:35:47: error: 'unique' was not declared in this scope
     dict.erase(unique(dict.begin(), dict.end()), dict.end());
                                               ^