Compilare: main.cpp: In function 'void dfs(int)': main.cpp:28:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(int i=0;i<v[node].size();i++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:47:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i=0;i<collected.size();i++) | ~^~~~~~~~~~~~~~~~~