Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:33:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for ( int i = 0; i < g[node].size(); i++ ) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:98:9: warning: unused variable 'c' [-Wunused-variable] 98 | int c,d; | ^ main.cpp:98:11: warning: unused variable 'd' [-Wunused-variable] 98 | int c,d; | ^