Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for (int i = 0; i < adj[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:30:18: warning: unused variable 'j' [-Wunused-variable] 30 | int n, m, i, j, a, x, y, log; | ^ main.cpp:30:21: warning: unused variable 'a' [-Wunused-variable] 30 | int n, m, i, j, a, x, y, log; | ^