Compilare: main.cpp: In function 'void DFS(int)': main.cpp:14:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i=0;i<v[start].size();i++){ | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:37:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(i=0;i<sol.size();i++){ | ~^~~~~~~~~~~