Compilare: main.cpp: In function 'int main()': main.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int i=0;i<l[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp:43:13: warning: unused variable 'cost' [-Wunused-variable] 43 | int cost=pq.top().cost; | ^~~~