Compilare: main.cpp: In function 'void DFS(int)': main.cpp:34:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(int i = 0; i < L[nod].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:59:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int j = 0; j < L[a[i]].size(); j++) | ~~^~~~~~~~~~~~~~~~