Compilare: main.cpp: In function 'void dfs(int)': main.cpp:42:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<v>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for (int i = 0; i < adj[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:23: warning: unused variable 'j' [-Wunused-variable] 56 | int n, m, val, i, j, x, y, z, cmp_cnx = 0; | ^ main.cpp:56:26: warning: unused variable 'x' [-Wunused-variable] 56 | int n, m, val, i, j, x, y, z, cmp_cnx = 0; | ^ main.cpp:56:29: warning: unused variable 'y' [-Wunused-variable] 56 | int n, m, val, i, j, x, y, z, cmp_cnx = 0; | ^ main.cpp:56:32: warning: unused variable 'z' [-Wunused-variable] 56 | int n, m, val, i, j, x, y, z, cmp_cnx = 0; | ^ main.cpp:76:10: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 76 | bool ok = true; | ^~