Compilare: main.cpp: In function 'int cost_minim()': main.cpp:70:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Nod>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for(int nod=0; nod<Q.size();nod++){ | ~~~^~~~~~~~~ main.cpp: In function 'void actualizare_d(int)': main.cpp:79:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Nod>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | for(int v = 0 ; v<Q.size(); v++){ | ~^~~~~~~~~ main.cpp: In function 'int cost_minim()': main.cpp:76:12: warning: 'min_index' may be used uninitialized [-Wmaybe-uninitialized] 76 | return min_index; | ^~~~~~~~~ main.cpp:69:22: note: 'min_index' was declared here 69 | int min=INT_MAX, min_index; | ^~~~~~~~~ main.cpp: In function 'void Prim_nu_chiar_optim()': main.cpp:69:22: warning: 'min_index' may be used uninitialized [-Wmaybe-uninitialized]