Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:20:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for (int i = 0;i < e[node].size();i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:40:13: warning: unused variable 'cost' [-Wunused-variable] 40 | int u,v,cost; | ^~~~