View Compilation Error

0_0_22895300_10370.cpp: In function 'int main()':
0_0_22895300_10370.cpp:64:26: error: 'sort' was not declared in this scope
         sort(temp, temp+n);
                          ^
0_0_22895300_10370.cpp:65:42: error: 'unique' was not declared in this scope
         int l = (int)(unique(temp, temp+n)-temp);
                                          ^