Compilare: main.cpp: In function 'void findPath()': main.cpp:68:28: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | while (last_idx[u] < adj[u].size()) { main.cpp:92:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 92 | if (path.size() != n + 1) { | ~~~~~~~~~~~~^~~~~~~~