Compilare: main.cpp: In function 'int main()': main.cpp:48:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(int i = 0; i < v[e.b].size(); i ++){ | ~~^~~~~~~~~~~~~~~ main.cpp:61:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int i = 0; i < u[e.b].size(); i ++){ | ~~^~~~~~~~~~~~~~~