Compilare: main.cpp: In function 'int DFS(int)': main.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(int i=0;i<v[start].size();i++){ | ~^~~~~~~~~~~~~~~~ main.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int j=0;j<v[vecin].size();j++){ | ~^~~~~~~~~~~~~~~~ main.cpp:27:1: warning: no return statement in function returning non-void [-Wreturn-type] 27 | } | ^ main.cpp: In function 'int main()': main.cpp:40:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for(i=0;i<sol.size();i++){ | ~^~~~~~~~~~~