Compilare: main.cpp: In function 'void vizitat(std::vector<std::vector<int> >&, std::vector<int>&, int, std::vector<int>)': main.cpp:11:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | for( int i = 0; i < vecini[u].size(); i++ ){ | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for( int i = 1; i < cost_subarbori.size(); i++ ){ | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:24:20: warning: unused variable 'nr_muchii' [-Wunused-variable] 24 | int nr_noduri, nr_muchii; | ^~~~~~~~~ main.cpp:42:9: warning: variable 'timp' set but not used [-Wunused-but-set-variable] 42 | int timp; | ^~~~