Compilare: user.cpp: In function ‘int main()’: user.cpp:33:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] edges[x][y] = 1; ^ user.cpp:33:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] edges[x][y] = 1; ^ user.cpp:34:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] G[x].push_back(y); ^ user.cpp:35:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++deg[y]; ^ user.cpp:71:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < V[len].size(); ++j) { ^ user.cpp:79:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < V[i].size(); ++j) { ^ user.cpp:108:26: warning: ‘lol’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int node : G[lol]) { ^