Compilare: main.cpp: In function 'void remove_vertex(int)': main.cpp:23:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (int outgoing = 0; outgoing < edges[vertex].size(); ++outgoing) | ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void write_output()': main.cpp:101:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 101 | for (int i = 0; i < sorted.size(); ++i) | ~~^~~~~~~~~~~~~~~