How is this code described in the video could be correct?
I mean when he declared a map named “visited”
that should be declared as
map < int,bool > visited;
not
map < int, int > visited;
Graph Breadth First Search
logically it should be
map<int ,bool>
but map<int ,int>visited is not wrong
as bool is stored as 0 and 1 internally
so it will also run