Compilare: main.cpp: In function 'void dfs(int)': main.cpp:35:7: warning: unused variable 'i' [-Wunused-variable] 35 | int i, nsons; | ^ main.cpp:35:10: warning: unused variable 'nsons' [-Wunused-variable] 35 | int i, nsons; | ^~~~~ main.cpp: In function 'int main()': main.cpp:73:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for (i = 0; i < vcicle.size(); i++) | ~~^~~~~~~~~~~~~~~