Compilare: main.cpp: In function 'void dfs(int)': main.cpp:12:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for (int i = lastNeighbour[node]; i < graph[node].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:49:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 49 | if (euler.size() != m) { | ~~~~~~~~~~~~~^~~~