Compilare: main.cpp: In function 'int main()': main.cpp:120:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 120 | if ( edges[u].size() == r ) { | ~~~~~~~~~~~~~~~~^~~~ main.cpp:129:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 129 | for ( i = 0; i < match.match.size(); i++ ) | ~~^~~~~~~~~~~~~~~~~~~~