Compilare: main.cpp: In member function 'void Graph::getGuides(std::vector<int>&)': main.cpp:148:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 148 | for (int i=1; i < edges.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:168:12: warning: unused variable 'M' [-Wunused-variable] 168 | int N, M, K; | ^