Compilare: main.cpp: In function 'int DFS(int)': main.cpp:21:1: warning: no return statement in function returning non-void [-Wreturn-type] 21 | } | ^ main.cpp: In function 'int main()': main.cpp:34:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(i=0;i<sol.size();i++){ | ~^~~~~~~~~~~