Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:18:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(int x=0; x<v[nod].size(); ++x) | ~^~~~~~~~~~~~~~ main.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int x=0; x<v[nod].size(); ++x) | ~^~~~~~~~~~~~~~