Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i = 0; i < edge[node].size(); i++){ | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:13:9: warning: unused variable 'i' [-Wunused-variable] 13 | int i; | ^ main.cpp: In function 'int main()': main.cpp:56:15: warning: unused variable 'j' [-Wunused-variable] 56 | int n, i, j; | ^