Compilare: main.cpp: In function 'void dfs(int, int, int)': main.cpp:33:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (int j=0; j<v[cur].size(); j++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:77:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (int i=0; i<afis.size(); i++) | ~^~~~~~~~~~~~ main.cpp:83:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for (int j=0; j<afis[i].size(); j++) | ~^~~~~~~~~~~~~~~