View Compilation Error

0_0_37769035_25695.cpp: In member function 'void Dijkstra::operator()(int, std::vector<int>*, std::vector<long long int>*, int)':
0_0_37769035_25695.cpp:64:45: error: 'memset' was not declared in this scope
   memset(vis, false, sizeof(bool) * (n + 10));
                                             ^