Compilare: main.cpp:10: warning: "DEBUG" redefined 10 | #define DEBUG | main.cpp:2: note: this is the location of the previous definition 2 | #define DEBUG(x) cout << "[DEBUG] " << x << endl; | main.cpp: In function 'void iter_through_edges(std::vector<std::vector<int> >&, const std::function<void(int, int)>&)': main.cpp:15:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for (int i = 0; i < graph.size(); i++) { | ~~^~~~~~~~~~~~~~ main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int j = 0; j < graph[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~