Compilare: main.cpp: In function 'int main()': main.cpp:39:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=0;i<vec[nod].size();++i) | ~^~~~~~~~~~~~~~~~ main.cpp:44:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(int i=0;i<vec[n].size();++i) | ~^~~~~~~~~~~~~~