Eroare de compilare: main.cpp:12:1: error: 'stack' does not name a type; did you mean 'obstack'? 12 | stack<int> s; | ^~~~~ | obstack main.cpp:15:1: error: 'bitset' does not name a type 15 | bitset<2 * NMAX> visited; | ^~~~~~ main.cpp: In function 'void dfs(int)': main.cpp:23:5: error: 'visited' was not declared in this scope 23 | visited[node] = 1; | ^~~~~~~ main.cpp:29:5: error: 's' was not declared in this scope 29 | s.push(node); | ^ main.cpp: In function 'int main()': main.cpp:54:14: error: 'visited' was not declared in this scope 54 | if (!visited[i]) { | ^~~~~~~ main.cpp:59:13: error: 's' was not declared in this scope 59 | while (!s.empty()) { | ^ Non zero exit status: 1