View Compilation Error

0_0_39321614_18919.cpp: In function 'int bfs(std::unordered_map<int, std::vector<Edge> >&, int, int)':
0_0_39321614_18919.cpp:28:5: error: 'unordered_set' was not declared in this scope
   28 |     unordered_set<int> visited;
      |     ^~~~~~~~~~~~~
0_0_39321614_18919.cpp:5:1: note: 'std::unordered_set' is defined in header '<unordered_set>'; did you forget to '#include <unordered_set>'?
    4 | #include <unordered_map>
  +++ |+#include <unordered_set>
    5 | 
0_0_39321614_18919.cpp:28:19: error: expected primary-expression before 'int'
   28 |     unordered_set<int> visited;
      |                   ^~~
0_0_39321614_18919.cpp:35:9: error: 'visited' was not declared in this scope
   35 |         visited.insert(node);
      |         ^~~~~~~