Compilare: main.cpp: In function 'int main()': main.cpp:70:18: warning: comparison of integer expressions of different signedness: 'std::vector<std::tuple<int, int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 70 | if (ans.size() == m / 2) { | ~~~~~~~~~~~^~~~~~~~ main.cpp: In function 'void dfs(int, int)': main.cpp:49:17: warning: 'etata' may be used uninitialized in this function [-Wmaybe-uninitialized] 49 | elim[etata] = elim[eultim] = true; | ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:49:32: warning: 'eultim' may be used uninitialized in this function [-Wmaybe-uninitialized] 49 | elim[etata] = elim[eultim] = true; | ~~~~~~~~~~~~~^~~~~~