Compilare: main.cpp: In member function 'void Graf::Dijkstra(std::ifstream&, std::ofstream&, int, std::vector<std::pair<int, int> >*, std::priority_queue<std::pair<int, int> >, std::vector<int>&, std::vector<int>&)': main.cpp:225:9: warning: unused variable 'minn' [-Wunused-variable] 225 | int minn, i, k, pas, cost; | ^~~~ main.cpp:225:21: warning: unused variable 'pas' [-Wunused-variable] 225 | int minn, i, k, pas, cost; | ^~~ main.cpp: In member function 'void Graf::dfs_diametru_arbore(int, int, int&, int&, std::vector<int>*, std::vector<int>&)': main.cpp:272:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 272 | for (int i = 0; i < adj[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:675:16: warning: unused variable 'm' [-Wunused-variable] 675 | int n, m, op; | ^ main.cpp:675:19: warning: unused variable 'op' [-Wunused-variable] 675 | int n, m, op; | ^~ main.cpp: In constructor 'Disjoint_set::Disjoint_set(int)': main.cpp:99:20: warning: '*<unknown>.Disjoint_set::noduri' is used uninitialized in this function [-Wuninitialized] 99 | this->noduri = noduri; | ^~~~~~