Compilare: main.cpp: In function 'void solve()': main.cpp:81:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 81 | if (graph[i].size() > mx1) { | ~~~~~~~~~~~~~~~~^~~~~ main.cpp:87:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 87 | else if (graph[i].size() > mx2) { | ~~~~~~~~~~~~~~~~^~~~~ main.cpp:79:34: warning: 'node2' may be used uninitialized [-Wmaybe-uninitialized] 79 | int mx1 = 0, mx2 = 0, node1, node2; | ^~~~~ main.cpp:79:27: warning: 'node1' may be used uninitialized [-Wmaybe-uninitialized] 79 | int mx1 = 0, mx2 = 0, node1, node2; | ^~~~~