Compilare: main.cpp: In function 'int main()': main.cpp:91:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | if(hossz!=utak.size()) | ~~~~~^~~~~~~~~~~~~ main.cpp:100:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 100 | if(db[i]==utak.size()) | ~~~~~^~~~~~~~~~~~~ main.cpp:109:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | for(int i=0;i<megoldas.size();i++){ | ~^~~~~~~~~~~~~~~~