View Compilation Error

0_0_34829989_3649.cpp: In function 'std::vector<long long int> Pollard_Rho::getFac(long long int)':
0_0_34829989_3649.cpp:147:36: error: 'sort' was not declared in this scope
         sort(fac.begin(), fac.end());
                                    ^
0_0_34829989_3649.cpp:148:48: error: 'unique' was not declared in this scope
         fac.erase(unique(fac.begin(), fac.end()), fac.end());
                                                ^
0_0_34829989_3649.cpp: In function 'std::vector<std::pair<long long int, int> > Pollard_Rho::getPrimeFac(long long int)':
0_0_34829989_3649.cpp:160:36: error: 'sort' was not declared in this scope
         sort(fac.begin(), fac.end());
                                    ^
0_0_34829989_3649.cpp:161:48: error: 'unique' was not declared in this scope
         fac.erase(unique(fac.begin(), fac.end()), fac.end());
                                                ^