Eroare de compilare: main.cpp: In member function 'void Graph::BFS(int)': main.cpp:74:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for (i = 0; i < a[k].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In member function 'void Graph::DFS(int)': main.cpp:97:2: error: 'viz' was not declared in this scope 97 | viz[x] = 1; | ^~~ main.cpp:98:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 98 | for(i = 0; i < a[x].size(); i++) | ~~^~~~~~~~~~~~~ Non zero exit status: 1