Compilare: main.cpp: In function 'void dfs(int)': main.cpp:38:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(i=0; i<G[k].size(); i++) | ~^~~~~~~~~~~~ main.cpp: In function 'void dfs1(int)': main.cpp:46:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for(i=0; i<G[k].size(); i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:6: warning: unused variable 'j' [-Wunused-variable] 52 | {int j, k, i; | ^ main.cpp: In function 'int componenta(int)': main.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type] 32 | } | ^