Compilare: main.cpp: In function 'int main()': main.cpp:83:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for(i=0; i<comp.size(); ++i) | ~^~~~~~~~~~~~ main.cpp:90:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(i=0; i<comp.size(); ++i)for(auto o:comp[i])for(auto p:v[o])if(nnr[o]!=nnr[p.to])muchii.push_back({nnr[o]+1,nnr[p.to]+1,p.ajutor}); | ~^~~~~~~~~~~~