Compilare: main.cpp: In static member function 'static bool Graph::eligible(std::vector<int>&)': main.cpp:224:19: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare] 224 | if (x > n - 1) { | ~~^~~~~~~ main.cpp: In member function 'void Graph::optimalPaths(int, int, std::ostream&)': main.cpp:315:26: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'long unsigned int' [-Wsign-compare] 315 | if (check[i] == pathCount) { main.cpp:323:26: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'long unsigned int' [-Wsign-compare] 323 | if (check[i] == pathCount) { main.cpp: In member function 'void Graph::minimumSubtree(int, std::vector<std::pair<std::pair<int, int>, int> >&, std::ostream&)': main.cpp:398:28: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 398 | if (sol.size() == n - 1) { | ~~~~~~~~~~~^~~~~~~~